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A skier of mass 67 kg is pulled up a slope by a motor-driven cable. a)...

A skier of mass 67 kg is pulled up a slope by a motor-driven cable.
a) How much work is required to pull him 65 m up a 30° slope (assumed frictionless) at a constant speed of 3.5 m/s? _________kJ

(b) What power (expressed in hp) must a motor have to perform this task? _______hp

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