Derive an expression for rotating kinetic energy of rigid body/
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Explanation:
The rotational kinetic energy is thekinetic energy of rotation of a rotating rigid body or system of particles, and is given by K=12Iω2 K = 1 2 I ω 2 , where I is the moment of inertia, or “rotational mass” of the rigid body or system of particles.
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Consider a rigid body rotating with a constant angular velocity
ω
about an axis passing through the point O.
As the body rotates, all the particles perform uniform circular motion.
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