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-rw-r--r--3886/CH7/EX7.4/7_4.sce17
-rw-r--r--3886/CH7/EX7.4/7_4.txt3
2 files changed, 20 insertions, 0 deletions
diff --git a/3886/CH7/EX7.4/7_4.sce b/3886/CH7/EX7.4/7_4.sce
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index 000000000..d8bd73ed6
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+++ b/3886/CH7/EX7.4/7_4.sce
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+//range of weight
+//refer fig. 7.5
+//angle of contact
+theta=1.25*2*%pi
+//case 1-Let impending motion of the weight be downward
+//T1=600 //N
+//T2=W
+//from law of rope friction
+//T2=T1*%e^mu*theta
+aW=600*(%e^(0.3*2.5*%pi)) //N
+//case-2 impending motion of W be upward
+//T1=W
+//T2=600 N
+//from law of rope friction
+bW=600/(%e^(0.75*%pi)) //N
+printf("The range of weight that can be supported is from %.2f N to %.2f N",aW,bW)
+
diff --git a/3886/CH7/EX7.4/7_4.txt b/3886/CH7/EX7.4/7_4.txt
new file mode 100644
index 000000000..3e58193f3
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+++ b/3886/CH7/EX7.4/7_4.txt
@@ -0,0 +1,3 @@
+
+--> exec('E:\My program EM\7. Transmission of power\7.4.sce', -1)
+The range of weight that can be supported is from 6330.43 N to 56.87 N \ No newline at end of file