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.

asked Mar 2, 2023 150k views

20 votes

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.

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8 votes

$\\ \tt\hookrightarrow v=r\omega$

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

And

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

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

Valanto answered Mar 7, 2023

4.8k points

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