1. Define kinetic energy and derive equation about rigid body?
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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. The linear speed of the particle with mass m1 is V1=r1ω. Therefore, its kinetic energy is. E1=21m1V12=21m1r12ω2.
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Explanation:
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. The linear speed of the particle with mass m1 is V1=r1ω. Therefore, its kinetic energy is. E1=21m1V12=21m1r12ω2..
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