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A System Comprised Blocks,a Light Frictionless Pulley,and Connecting Ropes Is

Question 979

Multiple Choice

A system comprised blocks,a light frictionless pulley,and connecting ropes is shown in the figure.The 9.0-kg block is on a perfectly smooth horizontal table.The surfaces of the 12-kg block are rough,with μk = 0.30 between the block and the table.If the 5.0-kg block accelerates downward when it is released,find its acceleration. A system comprised blocks,a light frictionless pulley,and connecting ropes is shown in the figure.The 9.0-kg block is on a perfectly smooth horizontal table.The surfaces of the 12-kg block are rough,with μ<sub>k</sub> = 0.30 between the block and the table.If the 5.0-kg block accelerates downward when it is released,find its acceleration. A) 1.0 m/s<sup>2</sup> B) 1.2 m/s<sup>2</sup> C) 1.4 m/s<sup>2</sup> D) 1.6 m/s<sup>2</sup> E) 1.8 m/s<sup>2</sup>


A) 1.0 m/s2
B) 1.2 m/s2
C) 1.4 m/s2
D) 1.6 m/s2
E) 1.8 m/s2

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