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(a) Prove that the change in rotational inertia I with temperature of a solid object is given by ∆I = 2∝I ∆T. (b) A thin uniform brass rod, spinning freely at 230 rev/s about an axis perpendicular to it at its temperature increases by 170 C̒̒º. Calculate the change in angular velocity.

(a) Prove that the change in rotational inertia I with temperature of a solid object is given by ∆I = 2∝I ∆T. (b) A thin  uniform brass rod, spinning freely at 230 rev/s about an axis perpendicular to it at its temperature increases by 170 C̒̒º. Calculate the change in angular velocity.

Grade:upto college level

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