# Physics

A ski tow operates on a slope of angle 14.9∘ of length 320m . The rope moves at a speed of 12.5km/h and provides power for 55 riders at one time, with an average mass per rider of 68.0kg .Estimate the power required to operate the tow.

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1. V = 12.5km/h = 12500m/3600s. = 3.47 m/s.

P = 55F*V = 55*mg*V = 55*68*9.8*3.47 =
127.2 Joules/s = 127.2 Watts.

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posted by Henry
2. Correction: Change 127.2 J./s to
127.2 kJ/s = 127.2 KW.

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posted by Henry
3. 127.2W

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posted by thuraya
4. 133477.338

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posted by sabha

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