From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 213/CH10/EX10.18/10_18.sce | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100755 213/CH10/EX10.18/10_18.sce

(limited to '213/CH10/EX10.18/10_18.sce')

diff --git a/213/CH10/EX10.18/10_18.sce b/213/CH10/EX10.18/10_18.sce
new file mode 100755
index 000000000..32f001d14
--- /dev/null
+++ b/213/CH10/EX10.18/10_18.sce
@@ -0,0 +1,24 @@
+//To find power lost in friction
+clc
+//Given:
+D=200/1000,R=D/2 //m
+W=30*1000 //N
+alpha=120/2 //degrees
+mu=0.025
+N=140 //rpm
+//Solution:
+//Calculating the angular speed of the shaft
+omega=2*%pi*N/60 //rad/s
+//Power lost in friction assuming uniform pressure:
+//Calculating the total frictional torque
+T=2/3*mu*W*R*(1/sind(alpha)) //N-m
+//Calculating the power lost in friction
+P1=T*omega //Power lost in friction, W
+//Power lost in friction assuming uniform wear:
+//Calculating the total frictional torque
+T=1/2*mu*W*R*(1/sind(alpha)) //N-m
+//Calculating the power lost in friction
+P2=T*omega //Power lost in friction, W
+//Resluts:
+printf("\n\n Power lost in friction assuming uniform pressure, P = %d W.\n",P1)
+printf(" Power lost in friction assuming uniform wear, P = %.1f W.\n\n",P2)
\ No newline at end of file
-- 
cgit