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Starting from rest, a 5.7 kg block slides 2.4 m down a rough 30.0° incline. Thecoefficent of kinetic friction between the block and the incline isµk = 0.436.

(a) Determine the work done by the force of gravity.

_________ J

(b) Determine the work done by the friction force between block andincline.

_________ J

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