Clock Balance Wheel Fig P15

A clock balance wheel (Fig P15.39) has a period of oscillation of 0.250 s. The wheel is constructed so that its mass of 20.0 g is concentrated around a rim of radius 0.500 cm. What are (a) The wheel’s moment of inertia and
(b) The torsion constant of the attached spring?

A clock balance wheel (Fig P15.39) has a period

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