Added(A)/Deleted(D) following books

 A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/chapter1.ipynb
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/chapter2.ipynb
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/chapter3.ipynb
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/chapter4.ipynb
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/chapter5.ipynb
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/chapter6.ipynb
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/chapter7.ipynb
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/chapter8.ipynb
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/screenshots/DCLOADLINEchapter4.png
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/screenshots/DCLOADLineCH4.png
A  Basic_Electronics_by_Rakesh_Kumar_Garg,_Ashish_Dixit_&_Paban_Yadav/screenshots/TransferCharofnchmosfetCH8.png
A  Engineering_Mechanics_by_A._K._Tayal/Chapter10.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter12.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter13.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter14.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter15.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter16.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter17.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter18.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter19.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter2.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter20.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter21.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter22.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter23.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter24.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter25.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter26.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter3.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter4.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter5.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter6.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter7.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter8.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/Chapter9.ipynb
A  Engineering_Mechanics_by_A._K._Tayal/screenshots/1.png
A  Engineering_Mechanics_by_A._K._Tayal/screenshots/2.png
A  Engineering_Mechanics_by_A._K._Tayal/screenshots/3.png
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch10.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch11.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch12.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch14.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch16.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch2.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch3.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch4.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch5.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch6.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch7.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch8.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/ch9.ipynb
A  Semiconductor_circuit_approximations_by_A.P._Malvino/screenshots/ACloadLineChapter10.png
A  Semiconductor_circuit_approximations_by_A.P._Malvino/screenshots/DCandACloadlinechapter9.png
A  Semiconductor_circuit_approximations_by_A.P._Malvino/screenshots/Powerratingchapter9.png

1 files changed, 290 insertions, 0 deletions

diff --git a/Engineering_Mechanics_by_A._K._Tayal/Chapter24.ipynb b/Engineering_Mechanics_by_A._K._Tayal/Chapter24.ipynb
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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Chapter 24 Mechanical Vibrations"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Example 24.1 Simple Harmonic Motion"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "(a) The amplitude of oscillation is 10 cm\n",
+      "(b) The maximum acceleration is 10.966227 cm/s**2\n",
+      "(c) The velocity of the particle at 5 cm from mean position  is 9.068997 cm/s\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "# Initilization of variables\n",
+    "f=1/6 # oscillations/second\n",
+    "x=8 # cm # distance from the mean position\n",
+    "# Calculations\n",
+    "omega=2*math.pi*f\n",
+    "# Amplitude is given by eq'n \n",
+    "r=math.sqrt((25*x**2)/16) # cm\n",
+    "# Maximum acceleration is given as,\n",
+    "a_max=(math.pi/3)**2*10 # cm/s^2\n",
+    "# Velocity when it is at a dist of 5 cm (assume s=5 cm) is given by\n",
+    "s=5 # cm\n",
+    "v=omega*math.sqrt(r**2-s**2) # cm/s\n",
+    "# Results\n",
+    "print('(a) The amplitude of oscillation is %d cm'%r)\n",
+    "print('(b) The maximum acceleration is %f cm/s**2'%a_max)\n",
+    "print('(c) The velocity of the particle at 5 cm from mean position  is %f cm/s'%v)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Example 24.2 Simple Harmonic Motion"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "(a) The amplitude of oscillations is 0.252982 m\n",
+      "(b) The time period of oscillations is 1.216734 seconds\n",
+      "(c) The maximum velocity is 1.306395 m/s\n",
+      "(d) The maximum acceleration is 6.746192 m/s**2\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Initilization of variables\n",
+    "x_1=0.1 # m # assume the distance of the particle from mean position as (x_1 & x_2)\n",
+    "x_2=0.2# m \n",
+    "# assume velocities as v_1 & v_2\n",
+    "v_1=1.2 # m/s\n",
+    "v_2=0.8 # m/s\n",
+    "# Calculations\n",
+    "# The amplitude of oscillations is given by dividing eq'n 1 by 2 as,\n",
+    "r=math.sqrt(0.32/5) # m\n",
+    "omega=v_1/(math.sqrt(r**2-x_1**2)) # radians/second\n",
+    "t=(2*math.pi)/omega # seconds\n",
+    "v_max=r*omega # m/s\n",
+    "# let the max acceleration be a which is given as,\n",
+    "a=r*omega**2 # m/s**2 \n",
+    "# Results\n",
+    "print('(a) The amplitude of oscillations is %f m'%r)\n",
+    "print('(b) The time period of oscillations is %f seconds'%t)\n",
+    "print('(c) The maximum velocity is %f m/s'%v_max)\n",
+    "print('(d) The maximum acceleration is %f m/s**2'%a) # the value of max acc is incorrect in the textbook\n",
+    "# NOTE: the value of t is incorrect in the text book\n",
+    "# The values may differ slightly due to decimal point accuracy"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Example 24.5 Equivalent spring constant"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "(a) The stiffness of the spring is 2.012152 N/cm\n",
+      "(b) The maximum Tension in the spring is 65.091138 N\n",
+      "(c) The maximum velocity is 0.471239 m/s\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Initilization of variabes\n",
+    "W=50 # N # weight\n",
+    "x_0=0.075 # m # amplitude\n",
+    "f=1 # oscillation/sec # frequency\n",
+    "g=9.81 \n",
+    "# Calculations\n",
+    "omega=2*math.pi*f\n",
+    "K=(((2*math.pi)**2*W)/g)*(10**-2) # N/cm\n",
+    "# let the total extension of the string be delta which is given as,\n",
+    "delta=(W/K)+(x_0*10**2) # cm\n",
+    "T=K*delta # N # Max Tension\n",
+    "v=omega*x_0 #m/s # max velocity\n",
+    "# Results\n",
+    "print('(a) The stiffness of the spring is %f N/cm'%K)\n",
+    "print('(b) The maximum Tension in the spring is %f N'%T)\n",
+    "print('(c) The maximum velocity is %f m/s'%v)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Example 24.10 Pendulum Motion"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The time period of oscillation of the pendulum for upward acc of the elevator is 1.912710 seconds\n",
+      "The time period of oscillation of the pendulum for downward acc of the elevator is 2.114580 seconds\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Initilization of variables\n",
+    "l=1 # m # length of the simple pendulum\n",
+    "g=9.81 # m/s^2\n",
+    "# Calculations\n",
+    "# Let t_s be the time period when the elevator is stationary\n",
+    "t_s=2*math.pi*math.sqrt(l/g) #/ seconds\n",
+    "# Let t_u be the time period when the elevator moves upwards. Then from eqn 1\n",
+    "t_u=2*math.pi*math.sqrt((l)/(g+(g/10))) # seconds\n",
+    "# Let t_d be the time period when the elevator moves downwards.\n",
+    "t_d=2*math.pi*math.sqrt(l/(g-(g/10))) # seconds\n",
+    "# Results\n",
+    "print('The time period of oscillation of the pendulum for upward acc of the elevator is %f seconds'%t_u)\n",
+    "print('The time period of oscillation of the pendulum for downward acc of the elevator is %f seconds'%t_d)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Example 24.11 Pendulum Motion"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The time period of oscillation of the pendulum for upward acc of the elevator is 0.953463 seconds\n",
+      "The time period of oscillation of the pendulum for downward acc of the elevator is 1.054093 seconds\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Initilization of variables\n",
+    "t=1 # second # time period of the simple pendulum\n",
+    "g=9.81 # m/s^2\n",
+    "# Calculations\n",
+    "# Length of pendulum is given as,\n",
+    "l=(t/(2*math.pi)**2)*g # m\n",
+    "# Let t_u be the time period when the elevator moves upwards. Then the time period is given as,\n",
+    "t_u=2*math.pi*math.sqrt((l)/(g+(g/10))) # seconds\n",
+    "# Let t_d be the time period when the elevator moves downwards.\n",
+    "t_d=2*math.pi*math.sqrt(l/(g-(g/10))) # seconds\n",
+    "# Results\n",
+    "print('The time period of oscillation of the pendulum for upward acc of the elevator is %f seconds'%t_u)\n",
+    "print('The time period of oscillation of the pendulum for downward acc of the elevator is %f seconds'%t_d)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Example 24.12 Pendulum Motion"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The time period of oscillations of the disc is 0.475599 seconds\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Initilization of variables\n",
+    "m=15 # kg # mass of the disc\n",
+    "D=0.3 # m # diameter of the disc\n",
+    "R=0.15 # m # radius\n",
+    "l=1 # m # length of the shaft\n",
+    "d=0.01 # m # diameter of the shaft\n",
+    "G=30*10**9 # N-m**2 # modulus of rigidity\n",
+    "# Calculations\n",
+    "# M.I of the disc about the axis of rotation is given as,\n",
+    "I=(m*R**2)/2 # kg-m**2\n",
+    "# Stiffness of the shaft\n",
+    "k_t=(math.pi*d**4*G)/(32*l) # N-m/radian\n",
+    "t=2*math.pi*math.sqrt(I/k_t) # seconds\n",
+    "# Results\n",
+    "print('The time period of oscillations of the disc is %f seconds'%t)"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.5.1"
+  },
+  "widgets": {
+   "state": {},
+   "version": "1.1.2"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}