A piece of machinery is spinning at 760rpm . When a brake is applied, its rotation rate drops to 480rpm while it turns through 210 revolutions.(adsbygoogle = window.adsbygoogle || []).push({});

What is the magnitude of the angular deceleration?

Answer in Rad/s^2

Eqn I used:[tex]\omega[/tex]^2=[tex]\omega[/tex]_0_^2+2[tex]\alpha[/tex](change in theta)

I put 480^2=760^2+2(alpha)210

I got 3.79e-3...

Wrong...:(

what did I do wrong? Ithink its the units, they are very confusing.

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# Homework Help: Angular acceleration of machinery

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