(a)what minimum force F is needed to lift the piano (mass M) using the pulley aparatus in fig. 4-60 ?
(b)also determine the tension at each section of rope Ft1, ft2, ft3,ft4
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Expert's answer
2020-11-02T09:24:04-0500
(a) If we have a system of two pulleys, the force required will be
"F=Mg\/2."
(b) The tension in the rope directly attached to the piano is
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