A skier of mass 73.0 kg is pulled up a slope by a motor- driven cable.?

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A skier of mass 73.0 kg is pulled up a slope by a motor- driven cable.?

How much work is required to pull the skier 60.4 m up a 31.0 degree slope (assumed to be frictionless) at a constant speed of 2.0 m/s? The acceleration of gravity is 9.8 m/s^2. Answer in units of J.

2007-12-16 05:24:24 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Physics

1 answers

Work = Change in Energy

The height increase h is ( 60.4 m ) ( cos 31 degrees ) and the change in energy is m g h. This is also equal to the work done.

2007-12-16 05:28:41 · answer #1 · answered by jgoulden 7 · 0⤊ 0⤋