A discus thrower accelerates a discus from rest to a speed of 25 m/s by whirling it though 1.25 rev. Assume the discus moves on the arc of a circle 1m in radius.(adsbygoogle = window.adsbygoogle || []).push({});

Determine the magnitude of the angular acceleration of the discus:

ω=angular velocity

ω=v/r=25m/s / 1m = 25rad/s

ω^2=2ad

(25rad/s)^2=2a1.5(pi2)

a=33m/s^2

is this correct?

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# Homework Help: Determine the magnitude of the angular acceleration of the discus

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