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Determine the maximum weight W the man can lift with constant velocity using the pulley system, without and then with the leading block or pulley

Determine the maximum weight W the man can lift with constant velocity using the pulley system, without and then with the "leading block" or pulley at A. The man has a weight of 201lb and the coefficient of static friction between his feet and the ground is ?s = 0.61.

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A.) Determine the maximum weight W the man can lift with constant velocity using the pulley system, without the pulley at A.

Part B). Determine the maximum weight W the man can lift with constant velocity using the pulley system, with the pulley at A.

 

 

B 45 W (a) B C W (b)

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