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January 31, 2015

January 31, 2015

Posted by **help me!!!** on Thursday, June 28, 2012 at 9:51pm.

uniformly from 22.0 rad/s to 13.5 rad/s. What is the magnitude of the angular acceleration of

the wheel?

A) 0.616 rad/s

2

B) 22.5 rad/s

2

C) 5.45 rad/s

2

D) 10.9 rad/s

2

E) 111 rad/s

2

- physics -
**ajayb**, Friday, June 29, 2012 at 9:15amW2^2 = W1^2 + 2*alpha*theta

13.5^2 = 22.0^2 +2*alpha*13.8

alpha = (13.5^2 - 22.0^2)/2*13.8

= - 10.9 rad/s^2

So, magnitude of angular acceleration = 10.9 rad/s^2

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