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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /1835/CH10/EX10.9 | |
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initial commit / add all books
Diffstat (limited to '1835/CH10/EX10.9')
| -rwxr-xr-x | 1835/CH10/EX10.9/Ex10_9.sce | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/1835/CH10/EX10.9/Ex10_9.sce b/1835/CH10/EX10.9/Ex10_9.sce new file mode 100755 index 000000000..d2a8ba2e4 --- /dev/null +++ b/1835/CH10/EX10.9/Ex10_9.sce @@ -0,0 +1,28 @@ +//CHAPTER 10 ILLUSRTATION 9 PAGE NO 275
+//TITLE:Brakes and Dynamometers
+clc
+clear
+//===========================================================================================
+//INPUT DATA
+n=12;//Number of blocks
+q=15;//Angle subtended in degree
+P=185;//Power in kW
+N=300;//Speed in r.p.m
+U=0.25;//Coefficient of friction
+d=1.25;//Diamter in m
+b1=0.04;//Distance in m
+b2=0.14;//Distance in m
+a=1;//Diatance in m
+m=2400;//Mass of rotor in kg
+k=0.5;//Radius of gyration in m
+
+Td=(P*60000)/(2*3.14*N*(d/2));//Tension difference in N
+T=Td*(d/2);//Torque in Nm
+Tr=((1+(U*tand(q/2)))/(1-(U*tand(q/2))))^n;//Tension ratio
+To=(Td/(Tr-1));//Tension in N
+Tn=(Tr*To);//Tension in N
+P=((To*b2)-(Tn*b1))/a;//Force in N
+aa=(T/(m*k^2));//Angular acceleration in rad/s^2
+t=((2*3.14*N)/60)/aa;//Time in seconds
+
+printf('Minimum force required is %3.0f N \nTime taken to bring to rest is %3.1f seconds',P,t)
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