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6 August, 14:27

A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 10.0 rev/s. After 60 more complete revolutions, its angular speed is 15.035 rev/s ... Calculate the angular acceleration

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  1. 6 August, 14:31
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    1.05 rev / (s) 2

    Explanation:

    Here the disc is travelling from constant angular acceleration there for we can use motion equation for angular acceleration

    (V) 2 = (U) 2 + 2aS

    V - final angular velocity

    U - initial angular velocity

    S - revolution

    a - angular acceleration

    (15.035) 2 = (10) 2 + 2 * a * 60

    a = 1.05 rev / (s) 2
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