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A string is wrapped around a uniform solid cylinder of radius 4.30cm , as shown in the figure. The cylinder can rotate freely about its axis. The loose end of the string is attached to a block. The block has mass 15.0kg , and the cylinder has mass 11.8kg.

1739_A string is wrapped around a uniform solid cylinder.jpg

1) Find the magnitude α of the angular acceleration of the cylinder as the block descends.

2) What is the acceleration of the block?

3) What is the tension in the string?

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