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A skier of mass 65.0 kg is pulled up a slope by a motor-driven cable. How much work is required to pull the skier 57.0 m up a 35° slope (assumed to be frictionless) at a constant speed of 2.0 m/s?
J

• physics -

The vertical rise is
H = 57 sin 35 meters.

The work required to raise the skier that amount is M g H.

It does not depend upon the speed, although the required power does.

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