Question: Determine the force required at A if the acceleration of mass B is 2 0 f t s 2 upward. The

Determine the force required at "A" if the acceleration of mass "B" is 20fts2 upward. The weight of
block B is 50 lbf. Neglect mass of cables and pulleys. Neglect friction.
What is the force required at "A" if "B" is moving with upward with constant velocity?
What is the Mechanical Advantage of this system?
Determine the force required at " A " if the

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