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Question

A flywheel of mass 2 kg and radius 20 cm has an angular speed 50 rads1. When a clutch plate of mass 4 kg, radius 10 cm having an angular speed 200 rads1 is combined with it. Find the common speed of rotation.

A
125 rads1
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B
150 rads1
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C
175 rads1
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D
100 rads1
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