Figure 5-53 shows a man sitting in a bosuns chair that
Chapter , Problem 58(choose chapter or problem)
Figure 5-53 shows a man sitting in a bosuns chair that dangles from a massless rope, which runs over a massless, frictionless pulley and back down to the mans hand. The combined mass of man and chair is 95.0 kg. With what force magnitude must the man pull on the rope if he is to rise (a) with a constant velocity and PROBLEMS 121 (b) with an upward acceleration of 1.30 m/s2 ? (Hint: A free- body diagram can really help.) If the rope on the right extends to the ground and is pulled by a co- worker, with what force magnitude must the coworker pull for the man to rise (c) with a constant velocity and (d) with an upward acceleration of 1.30 m/s2 ? What is the magnitude of the force on the ceiling from the pulley system in (e) part a, (f ) part b, (g) part c, and (h) part d?
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