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14 January, 08:46

How would the kinetic energy of a flywheel (a spinning disk) change if its rotational inertia was five times smaller but its angular speed was five times larger

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  1. 14 January, 12:36
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    Answer: This implies that it will be 5 times lesser than it was before

    Explanation:

    From kinetic energy = 1/2Iω² where I = rotational mass and ω = angular speed 1/2 x (5I) x (1/25ω²) = 1/5th of the original kinetic energy This implies that it will be 5 times lesser than it was before.
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