man pulls a block of mass m = 15 kg up an incline at a slow constant velocity fo

Question

man pulls a block of mass m = 15 kg up an incline at a slow constant velocity for a distance of d = 4.5 m. The incline makes an angle q = 35 with the horizontal. The coefficient of kinetic friction between the block and the inclined plane is k = 0.2.

At the top of the incline, the string breaks and the block, assumed to be at rest when the string breaks, slides down a distance d = 4.5 m before it reaches a frictionless horizontal surface. A spring is mounted horizontally on the frictionless surface with one end attached to a wall. The block hits the spring, compresses it a distance L = 0.5 m, then rebounds back from the spring, retraces its path along the horizontal surface, and climbs up the incline.

d) How far up the incline d1 does the block rebound?

Explanation / Answer

from energy conservation d = 2.5 m

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