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Starting from rest, a 4.80-kg block slides 2.00 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is ?k = 0.436.
(a) Determine the work done by the force of gravity.
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(b) Determine the work done by the friction force between block and incline.
(c) Determine the work done by the normal force.
(d) Qualitatively, how would the answers change if a shorter ramp at a steeper angle were used to span the same vertical height?
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