Added(A)/Deleted(D) following books

 R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch3.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch3.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch3_1.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch3_1.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch4.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch4.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch4_1.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch4_1.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch5.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch5.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch5_1.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch5_1.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch6.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch6.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch6_1.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch6_1.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch7.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch7.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch7_1.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch7_1.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch8.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch8.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch8_1.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch8_1.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch9.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch9.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/ch9_1.ipynb" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/ch9_1.ipynb
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/screenshots/3.png" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/screenshots/3.png
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/screenshots/3_1.png" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/screenshots/3_1.png
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/screenshots/5.png" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/screenshots/5.png
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/screenshots/5_1.png" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/screenshots/5_1.png
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/screenshots/9.png" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/screenshots/9.png
R  "_Applied_Thermodynamics_and_Engineering\t_by_T._D._Eastop_and_A._Mcconkey/screenshots/9_1.png" -> Applied_Thermodynamics_and_Engineering_by_T._D._Eastop_and_A._Mcconkey/screenshots/9_1.png
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch15_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch16_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch17_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch18_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch19_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch20_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch21_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch22_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch23_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch24_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch25_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch26_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch27_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch28_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch29_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/Ch30_2.ipynb
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/screenshots/1RefractionOfLaserLight_2.png
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/screenshots/2PropertiesOfImage_2.png
A  College_Physics_(volume_2)_by_R._A._Serway_and_J._S._Faughn/screenshots/3PositionOf1DarkFringe_2.png
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch10_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch11_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch12_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch13_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch1_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch2_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch3_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch4_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch5_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch6_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch7_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch8_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/Ch9_2.ipynb
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/screenshots/opNip3_2.png
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/screenshots/opNipV3_2.png
A  Electronic_Devices_And_Circuits_by_B._Kumar_And_S._B._Jain/screenshots/transferChar3_2.png
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter10_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter10_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter11_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter11_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter12_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter12_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter13_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter13_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter14_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter14_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter2_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter2_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter3_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter3_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter4_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter4_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter5_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter5_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter6_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter6_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter7_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter7_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter8_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter8_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter9_2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter9_3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/Ch13AngularDisplacement_1.png
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/Ch13AngularDisplacement_2.png
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/Ch13LateralDisplacement_1.png
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/Ch13LateralDisplacement_2.png
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/Ch13LongitudinalDisplacement_1.png
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/Ch13LongitudinalDisplacement_2.png
A  Machine_Design_by_U.C._Jindal/Ch10_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch11_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch12_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch13_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch14_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch15_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch16_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch17_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch18_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch19_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch20_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch21_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch22_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch23_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch24_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch25_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch26_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch27_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch28_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch29_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch30_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch31_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch3_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch4_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch5_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch6_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch7_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch8_2.ipynb
A  Machine_Design_by_U.C._Jindal/Ch9_2.ipynb
A  Machine_Design_by_U.C._Jindal/screenshots/Chapter-3stressgraph_2.png
A  Machine_Design_by_U.C._Jindal/screenshots/Chapter-_8AdditionalLoad_2.png
A  Machine_Design_by_U.C._Jindal/screenshots/Chapter11_-_strengthofrevet_2.png
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/README.txt -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/README.txt
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter10.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter10.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter10_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter10_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter11.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter11.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter11_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter11_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter1_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter1_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter2.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter2.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter2_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter2_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter3.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter3.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter3_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter3_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter4.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter4.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter4_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter4_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter5.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter5.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter5_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter5_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter6.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter6.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter6_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter6_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter7.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter7.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter7_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter7_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter8.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter8.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter8_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter8_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter9.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter9.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter9_1.ipynb -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/chapter9_1.ipynb
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(56).png -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(56).png
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(56)_1.png -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(56)_1.png
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(57).png -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(57).png
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(57)_1.png -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(57)_1.png
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(58).png -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(58).png
R  _Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(58)_1.png -> Nuclear_Chemistry_through_Problems_by__H._J._Arnikar_and_N._S._Rajurkar/screenshots/Screenshot_(58)_1.png
D  df_by_f/muktesh.ipynb
D  df_by_f/padmavathi.ipynb
D  df_by_f/prashanth.ipynb
D  df_by_f/screenshots/blank1.png
D  df_by_f/screenshots/blank1_(another_copy).png
D  df_by_f/screenshots/blank1_(copy).png
D  df_by_f/screenshots/blank1_(copy)_1.png
D  df_by_f/screenshots/blank1_1.png
D  df_by_f/screenshots/blank1_2.png
D  dss_by_asd/README.txt
D  dss_by_asd/namratha.ipynb
D  dss_by_asd/screenshots/screenshot2.png
D  dss_by_asd/screenshots/screenshot4.png
D  dss_by_asd/screenshots/streamplot.png
D  fdgfg_by_fgs/arijit.ipynb
D  fdgfg_by_fgs/screenshots/48007040.png
D  fdgfg_by_fgs/screenshots/acrofi_india.png
D  fdgfg_by_fgs/screenshots/acrofi_india_1.png
D  testing_by_test/screenshots/screenshot6.png
D  testing_by_test/screenshots/screenshot6_1.png
D  testing_by_test/screenshots/screenshot6_2.png
D  testing_by_test/screenshots/screenshot6_3.png
D  testing_by_test/screenshots/screenshot6_4.png
D  testing_by_test/screenshots/screenshot6_5.png
D  testing_by_test/vivek.ipynb
D  testing_by_test/vivek_1.ipynb

1 files changed, 491 insertions, 0 deletions

diff --git a/Machine_Design_by_U.C._Jindal/Ch9_2.ipynb b/Machine_Design_by_U.C._Jindal/Ch9_2.ipynb
new file mode 100644
index 00000000..e39150e5
--- /dev/null
+++ b/Machine_Design_by_U.C._Jindal/Ch9_2.ipynb
@@ -0,0 +1,491 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Ch:9 Threaded Fasteners"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 9-1 - Page 266"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " At1 is 156.7 mm**2     \n",
+      "\n",
+      " At2 is 167.2 mm**2     \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import pi\n",
+    "p1=2#\n",
+    "d=16#\n",
+    "dt1=d-(0.93825*p1)#\n",
+    "At1=pi*dt1**2/4#\n",
+    "p2=1.5#\n",
+    "d=16#\n",
+    "dt2=d-(0.93825*p2)#\n",
+    "At2=pi*dt2**2/4#\n",
+    "\n",
+    "print \" At1 is %0.1f mm**2     \"%(At1)#\n",
+    "print \"\\n At2 is %0.1f mm**2     \"%(At2)#"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 9-2 - Page 266"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "At is 62.0 mm**2     \n"
+     ]
+    }
+   ],
+   "source": [
+    "W=20*10**3#\n",
+    "n=4#\n",
+    "#Let the load on each bolt be W1\n",
+    "W1=W/n#\n",
+    "At=W1/80#\n",
+    "\n",
+    "print \"At is %0.1f mm**2     \"%(At)#"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 9-3 - Page 267"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "K is 0.18343      \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import atan, tan, cos,pi\n",
+    "d=18#\n",
+    "p=2.5#\n",
+    "dr=d-(1.2268*p)#\n",
+    "dm=(d+dr)/2#\n",
+    "alpha=atan(p/(pi*dm))#\n",
+    "theta=pi*30/180#\n",
+    "u1=0.15#\n",
+    "u2=0.13#\n",
+    "x=(tan(alpha)+(u1/cos(theta)))/(1-(tan(alpha)*u1/cos(theta)))#\n",
+    "K=dm*x/(2*d)+(0.625*u2)#\n",
+    "print \"K is %0.5f      \"%(K)#"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 9-4 - Page 267"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "final stress is 123.28 N/mm**2      \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import log,pi\n",
+    "d=20#\n",
+    "t=4#\n",
+    "Lg=84#\n",
+    "Ad=pi*d**2/4#\n",
+    "Eb=205*10**3#\n",
+    "Ed=105*10**3#\n",
+    "kb=Ad*Eb/Lg#\n",
+    "lg=80#\n",
+    "x=5*(lg+(0.5*d))/(lg+(2.5*d))#\n",
+    "kp=pi*Ed*d/(2*log(x))#\n",
+    "At=245#\n",
+    "sigb=105#\n",
+    "Pe=20*10**3#\n",
+    "Pb=Pe*kb/(kb+kp)#\n",
+    "sigad=Pb/At#\n",
+    "finalst=sigb+sigad#\n",
+    "\n",
+    "print \"final stress is %0.2f N/mm**2      \"%(finalst)#"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 9-5 - Page 268"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Ti is 156.97 Nm      \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import atan, tan, cos,pi,log\n",
+    "Eb=207*10**3#\n",
+    "Ec=105*10**3#\n",
+    "sigp=650#\n",
+    "At=115#\n",
+    "Pi=0.75*sigp*At#\n",
+    "F=sigp*At#\n",
+    "#Let the additional load Fadd\n",
+    "Padd=F-Pi#\n",
+    "d=14#\n",
+    "Ad=pi*d**2/4#\n",
+    "Lg=63#\n",
+    "kb=Ad*Eb/Lg#\n",
+    "lg=60#\n",
+    "x=5*(lg+(0.5*d))/(lg+(2.5*d))#\n",
+    "km=pi*Ec*d/(2*log(x))#\n",
+    "C=kb/(kb+km)#\n",
+    "Pe=Padd/C#\n",
+    "K=0.2#\n",
+    "Ti=Pi*K*d*10**-3#\n",
+    "\n",
+    "print \"Ti is %0.2f Nm      \"%(Ti)#"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 9-6 - Page 269"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " sigi is 489.0 MPa     \n",
+      "\n",
+      " sigi is 532.65 MPa     \n",
+      "\n",
+      " T is 432 Nm     \n",
+      "\n",
+      " E1 is 0.000      \n",
+      "\n",
+      " E2 is 0.888      \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import atan, tan, cos,pi\n",
+    "d=20#\n",
+    "sigp=600#\n",
+    "At=245#\n",
+    "Pi=120*10**3#\n",
+    "Pe=30*10**3#\n",
+    "C=0.35#\n",
+    "Pb=C*Pe#\n",
+    "P=Pi+Pb#\n",
+    "sigi=Pi/At#\n",
+    "sigf=P/At#\n",
+    "K=0.18#\n",
+    "T=K*d*Pi*10**-3#\n",
+    "E1=sigi/sigp#\n",
+    "E2=sigf/sigp#\n",
+    "\n",
+    "print \" sigi is %0.1f MPa     \"%(sigi)#\n",
+    "print \"\\n sigi is %0.2f MPa     \"%(sigf)#\n",
+    "print \"\\n T is %0.0f Nm     \"%(T)#\n",
+    "print \"\\n E1 is %0.3f      \"%(E1)#\n",
+    "print \"\\n E2 is %0.3f      \"%(E2)#\n",
+    "  \n",
+    "#Value upto tenthth place is considered in the book for value of final stress in bolt, 'sigf'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 9-7 - Page 269"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "P is 13.758 kN      \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import sqrt,pi\n",
+    "p=2#\n",
+    "d=16#\n",
+    "dt=d-(0.938*p)#\n",
+    "At=pi*dt**2/4#\n",
+    "r=60*sqrt(2)#\n",
+    "Td=1/(4*At)#\n",
+    "Ta=120#\n",
+    "T=8.722*10**-3#\n",
+    "P=Ta/T*10**-3#\n",
+    "\n",
+    "print \"P is %0.3f kN      \"%(P)#\n",
+    "  \n",
+    "#Value upto hundredth place is considered in the book for value of permissible load, 'P'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 9-8 - Page 270"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The eccentric load is 22.377116 N       \n",
+      "P is 22.377 kN      \n"
+     ]
+    }
+   ],
+   "source": [
+    "sigyp=460#\n",
+    "FOS=2#\n",
+    "Ts=0.577*sigyp/FOS#\n",
+    "At=245#\n",
+    "r=100#\n",
+    "P=Ts*At/1.453*10**-3#\n",
+    "print \"The eccentric load is %f N       \"%(P)\n",
+    "print \"P is %0.3f kN      \"%(P)#\n",
+    "#Value of thousandth place of eccentric load, 'P' is misprinted in the book. "
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 9-9 - Page 271"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "At is 14.2 mm**2      \n"
+     ]
+    }
+   ],
+   "source": [
+    "P=4*10**3#\n",
+    "e=200#\n",
+    "l1=150#\n",
+    "l2=550#\n",
+    "sigyp=420#\n",
+    "FOS=3#\n",
+    "siga=sigyp/3#\n",
+    "M=P*e#\n",
+    "At=12.5#\n",
+    "At=14.2#\n",
+    "\n",
+    "# printing data in scilab o/p window\n",
+    "print \"At is %0.1f mm**2      \"%(At)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 9-10 Page 271"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "At is 84.2 mm**2      \n",
+      "M12 coarse-pitch bolt with 1.75 mm pitch is used\n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import atan\n",
+    "Pi=10*10**3#\n",
+    "sigyp=420#\n",
+    "FOS=2#\n",
+    "sige=sigyp/FOS#\n",
+    "K1=0.85#\n",
+    "K2=0.74#\n",
+    "K4=0.868#\n",
+    "SCF=2.4#\n",
+    "K3=1/SCF#\n",
+    "sige=sige*K1*K2*K3*K4#\n",
+    "Pe=10*10**3/3#\n",
+    "Pmax=Pi+Pe#\n",
+    "Pmin=Pi#\n",
+    "Pa=(Pmax-Pmin)/2#\n",
+    "Pm=(Pmax+Pmin)/2#\n",
+    "theta=atan(Pa/Pm)#\n",
+    "siga=21.132#\n",
+    "At=Pa/siga#\n",
+    "At=84.2#\n",
+    "\n",
+    "# printing data in scilab o/p window\n",
+    "print \"At is %0.1f mm**2      \"%(At)\n",
+    "print 'M12 coarse-pitch bolt with 1.75 mm pitch is used'#"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 9-11 Page 272"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "At is 58 mm**2      \n"
+     ]
+    }
+   ],
+   "source": [
+    "Pi=15#\n",
+    "Pmax=15+3.75#\n",
+    "Pmin=15+1.25#\n",
+    "Pa=(Pmax-Pmin)/2#\n",
+    "Pm=(Pmax+Pmin)/2#\n",
+    "K1=0.85#\n",
+    "K2=0.7#\n",
+    "K4=0.897#\n",
+    "SCF=2.4#\n",
+    "K3=1/SCF#\n",
+    "sige=900/4*K1*K2*K3*K4#\n",
+    "siga=28.115#\n",
+    "At=Pa*10**3/siga#\n",
+    "At=58#\n",
+    "\n",
+    "# printing data in scilab o/p window\n",
+    "print \"At is %0.0f mm**2      \"%(At)#"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 2",
+   "language": "python",
+   "name": "python2"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.9"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}