Asked by melissa

a student could either pull or push , at an angle of 30 deg from the horizontal, a 50-kg crate on a horizontal surface, where the coefficient of kinetic friction between the crate and the surface is .20 the crate is to be moved a horizontial distance of 15-m (a) compared to pushing pulling requires (1) less (2) the same or, (3) more work (b)calculate the minimum work required for both pulling and pushing
Answered by drwls
a) the same

b) M g cos 30 * (0.2) * 15 m. That is the work required to move it slowly without accelerating it.
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