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27 Nov 2019
A broken clothes drier with a mass of 128 kg is hurled from a cliff12.6 m high with an initial velocity of 14.5 m/s, directed at anangle of 39.8° above the horizontal.
a) How much work is done on the drier by its own weight during itsfall from the cliff to the ground?
b) What change in the gravitational potential energy of the clothesdrier takes place during the fall?
c) If the gravitational potential energy at the top of the cliff isassumed to be zero, what is its value when the clothes driercrashes into the ground?
A broken clothes drier with a mass of 128 kg is hurled from a cliff12.6 m high with an initial velocity of 14.5 m/s, directed at anangle of 39.8° above the horizontal.
a) How much work is done on the drier by its own weight during itsfall from the cliff to the ground?
b) What change in the gravitational potential energy of the clothesdrier takes place during the fall?
c) If the gravitational potential energy at the top of the cliff isassumed to be zero, what is its value when the clothes driercrashes into the ground?
Beverley SmithLv2
24 Aug 2019
