A rope attached to a 500-lb block passes over a fric- tionless pulley and is wrapped for one full turn around a If the coefficient of frie- tion between the rope and the post is 0.25. determine fixed post as shown in Fig. The minimum force P that must be used to begin to raise the block. P W
A rope attached to a 500-lb block passes over a fric- tionless pulley and is wrapped for one full turn around a If the coefficient of frie- tion between the rope and the post is 0.25. determine fixed post as shown in Fig. The minimum force P that must be used to begin to raise the block. P W
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Question
Transcribed Image Text:A rope attached to a 500-lb block passes over a fric-
tionless pulley and is wrapped for one full turn around a
If the coefficient of frie-
tion between the rope and the post is 0.25. determine
fixed post as shown in Fig.
The minimum force P that must be used to begin to
raise the block.
P
W
Expert Solution
Step 1
(a)
Given:
The weight of the block is .
The coefficient of friction between the rope and the post is .
Introduction:
Friction is a force between two surfaces that are sliding, or trying to slide, across each other. For example, when you try to push a book along the floor, friction makes this difficult. Friction always works in the direction opposite to the direction in which the object is moving or trying to move.
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