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Spring Block's Time Period

A wheel and a...

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A wheel and an axle is made to rotate about a horizontal axis with the help of a body of mass 5 kg attached to a string wound around the axle. The radius of the axle is 10 cm. The body falls vertically throught 5 m is 10 s starting from rest. The moment of inertial of the wheel and axle is (1)3.85 kg m2 (2) 4.85 kg m2 (3) 5.85 kg m2 (4) 2.85 kg m2

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