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

---
 278/CH22/EX22.9/ex_22_9.sce | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100755 278/CH22/EX22.9/ex_22_9.sce

(limited to '278/CH22/EX22.9')

diff --git a/278/CH22/EX22.9/ex_22_9.sce b/278/CH22/EX22.9/ex_22_9.sce
new file mode 100755
index 000000000..77a02f682
--- /dev/null
+++ b/278/CH22/EX22.9/ex_22_9.sce
@@ -0,0 +1,32 @@
+//find...
+clc
+//solution
+//given
+n=25
+d1=25//mm
+t1=18//mm
+tu=300//N/mm^2
+effm=0.95
+Cs=0.1
+ft=6//N/mm^2
+rho=7250//kg/m^3
+D=1.4//m
+R=0.7//m
+As=%pi*d1*t1//area of plate sheared
+Fs=As*tu//N
+Eps=0.5*Fs*t1//N-mm//energy req per stroke
+Epm=Eps*n/1000//N-m
+P=Epm/(60*effm)//W
+printf("power req is,%f W\n",P)
+//let t be thickness and b be width of rim
+//b=2t
+//A=b*t=2*t^2
+dE=(9/10)*Eps//N-m
+//let m be mass of wheel
+Erim=0.95*dE//N-m
+N=9*25//rpm
+w=2*%pi*N/60//rad/s
+m=Erim/(R^2*w^2*Cs)//kg
+//m=A*2*%pi*R*rho=63782*t^2
+t=sqrt(m/63782)//m
+printf("the thickness and width is,%f m\n,%f m\n",t,2*t)
-- 
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