A disc of moment of inertia 45kgm^2 is rotating with an angular velocity of 12rad/s.what will be its rotational kinetic energy?​

Question

A disc of moment of inertia 45kgm^2 is rotating with an angular velocity of 12rad/s.what will be its rotational kinetic energy?​

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Thanh Thu 1 year 2021-09-04T04:48:20+00:00 1 Answers 7 views 0

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    2021-09-04T04:49:28+00:00

    Answer:

    3240 J

    Explanation:

    here moment of inertia (I)= 45kgm²

    angular velocity (ω) = 12 rad/s

    now KE = 1/2(Iω²)=1/2(45×12²)= 3240J

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