Work done and gravitational force
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A person removes a 10.5 kg stereo amplifier from a shelf that is 1.82 m high. The amplifier is lowered at a constant speed to a height of 0.75 m. What is the work done by
(a) the person
(b) the gravitational force that acts on the amplifier
Work done by the gravitational force = force X distance =mgh = 10.5 x 9.81 ...
The solution calculates the work done and gravitational force.