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A music album 6 in radius rotates at a constant rate of 78 revolutions per minute. Find the

speed and angular acceleration of the album.

1 Answer

8 votes
  • r=6in
  • angular velocity=78rev/min


\\ \tt\hookrightarrow v=r\omega


\\ \tt\hookrightarrow v=6(78)=468rad/s

And


\\ \tt\hookrightarrow \alpha=v^2/r


\\ \tt\hookrightarrow \alpha=(468)^2/6=219026/6=36504rad/s^2

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