Question: The 7-kg block A is released in the position shown with a velocity of 1.5 m/s up the incline. Knowing that the velocity of the

The 7-kg block A is released in the position shown with a velocity of 1.5 m/s up the incline. Knowing that the velocity of the block is 3 m/s after it has moved 0.6 m up the incline, determine the work done by the friction force exerted on the block. Neglect the masses of the pulleys.

1.2 m 30 15 140 N

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