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A 2.00-kg block is tied to a wall and placed on top of a 5.00-kg block,...

A 2.00-kg block is tied to a wall and placed on top of a 5.00-kg block, as shown. A horizontal force of 55.0 N is applied to the 5.00-kg block. There is a coefficient of kinetic friction of 0.250 between all moving surfaces. Determine (a) the tension in the string and (b) the acceleration of the 5.00-kg block.
ANSWER IS: a) 4.90 N; (b) –6.59 m/s2

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