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physics

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A block of mass m = 4.30 kg is released from rest from point circle a and slides on the frictionless track shown in the figure below. (Assume ha = 5.20 m.)


B=3.20 c=2.00

(a) Determine the block's speed at points circle b and circle c.
point circle b
Y
point circle c

(b) Determine the net work done by the gravitational force on the block as it moves from point circle a to point circle c.

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