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2 October, 11:55

A ball on a string is swung at a constant speed of 3m/s in a horizontal circle. if the string is 1.25m long what is the centripetal acceleration of the ball?

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  1. 2 October, 13:51
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    The centripetal acceleration of the ball swung at constant speed is, a = 7.2 m/s²

    Explanation:

    Given data,

    The speed of the ball, v = 3 m/s

    The length of the string, r = 1.25 m

    The centripetal acceleration of the ball swung at constant speed is given by the formula,

    a = v² / r

    = 3² / 1.25

    = 7.2 m/s²

    Hence, the centripetal acceleration of the ball swung at constant speed is, a = 7.2 m/s²
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