A crate with a mass of 72.0 kg is pulled up an inclined surface by an attached rope, which is driven by a motor. The crate moves a distance of 45.0 m along the surface at a constant speed of 2.3 m/s. The surface is inclined at an angle of 30.0° with the horizontal. Assume friction is negligible. (a) How much work (in kJ) is required to pull the crate up the incline? kJ (b) What power (expressed in hp) must a motor have to perform this task? hp

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A: Consider the Figure shown below.

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