D d No tension

International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter7: Dry Friction
Section: Chapter Questions
Problem 7.36P: The coeffient of static friction between the uniform bar AB of weight W and the ground is 0.45. Find...
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No
tension
Figure P-3-5,10
Transcribed Image Text:No tension Figure P-3-5,10
3-5.10. The differentiàl chain hoist in Fig. P-3-5.10 (p. 95) consists of
two concentric pulleys rigidly fastened together. The pulleys form two
sprockets for an endless chain looped over them in two loops. In one loop
is mounted a movable pulley supporting a load W. Neglecting friction,
determine the maximum load, W that can just be raised by a pull P applied
as shown. How is this result changed if P is not vertical?
2PD
W =
D d
Ans.
1.
Transcribed Image Text:3-5.10. The differentiàl chain hoist in Fig. P-3-5.10 (p. 95) consists of two concentric pulleys rigidly fastened together. The pulleys form two sprockets for an endless chain looped over them in two loops. In one loop is mounted a movable pulley supporting a load W. Neglecting friction, determine the maximum load, W that can just be raised by a pull P applied as shown. How is this result changed if P is not vertical? 2PD W = D d Ans. 1.
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