Answer to Question #288643 in Mechanics | Relativity for Rossy

Question #288643

A solid rigid body rotating about an axis has a mass of 20kg and a radius of 2m from the axis of rotation.if its angular velocity is 25 rad/s,calculate its rotational kinetic energy

Expert's answer

"K=\\frac 12 mv^2=\\frac 12m\\omega^2r^2=25~kJ."

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