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19-02-2020
Physics

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What is the kinetic energy K of the rotating wheel? Express your answer in terms of m, r, n, t, and π.

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23-02-2020

Answer:

K = ( (pi)^2 * n^2 * m * r^2 ) / t^2

Explanation:

=(1/2)Iw^2

I = moment of inertia= (1/2)mr^2

w = angular speed = 2(pi)n/t

By substitution, we have

K = ( (pi)^2 * n^2 * m * r^2 ) / t^2

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