From 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 Mon Sep 17 00:00:00 2001
From: prashantsinalkar
Date: Tue, 10 Oct 2017 12:27:19 +0530
Subject: initial commit / add all books

---
 3785/CH6/EX6.9/Ex6_9.sce | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 3785/CH6/EX6.9/Ex6_9.sce

(limited to '3785/CH6/EX6.9')

diff --git a/3785/CH6/EX6.9/Ex6_9.sce b/3785/CH6/EX6.9/Ex6_9.sce
new file mode 100644
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+++ b/3785/CH6/EX6.9/Ex6_9.sce
@@ -0,0 +1,23 @@
+// Example 6_9
+clc;funcprot(0);
+// Given data
+a=1.5;// Radius in cm
+W=3;// Length in cm
+hbar=5*10^-5;// Clearance in m
+mu=2*10^-2;// Viscosity of lubricating oil in Pa s
+rho=9*10^2;// Density of lubricating oil in kg/m^3
+N=3600;// rpm
+n=0.5;// The eccentricity 
+
+// Calculation
+// (a)
+omega=(2*%pi*N)/60;// s^-1
+L=(12*%pi*mu*omega*W*10^-2)*((a*10^-2)^3/(hbar)^2)*(n/((sqrt(1-n^2))*(2+n^2)));// The load force in N
+// (b)
+T=(4*%pi*mu*omega*W*10^-2)*((a*10^-2)^3/(hbar))*((1+(2*n^2))/((sqrt(1-n^2))*(2+n^2)));// The torque in Nm
+P=omega*T;// Power in W
+// (c)
+Re_h=(rho*omega*a*10^-2*hbar*(1-n^2))/(mu*(2+n^2));// Reynolds number
+printf("\n(a)The maximum load F=%1.3e N \n(b)The torque,T=%0.4f Nm \n   The frictional power of the bearing,P=%2.2f W \n(c)The reynolds number,Re_h=%2.2f",L,T,P,Re_h);
+Re_h=((a*10^-2)/hbar)
+// The answer provided in the text book is wrong
-- 
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