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## A compact disc has a radius of 6 cm. As the cd player powers up, the disc has an angular acceleration of 1.2 rad/s^2. The disc is at full s

Question

A compact disc has a radius of 6 cm. As the cd player powers up, the disc has an angular acceleration of 1.2 rad/s^2. The disc is at full speed after 3 seconds. Determine the angular velocity of the disc once it is at full speed.

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Physics
3 years
2021-07-28T00:38:04+00:00
2021-07-28T00:38:04+00:00 1 Answers
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## Answers ( )

Answer:3.6 rad/s

Explanation:Given that,

Radius of a compact disc is 6 cm

The angular acceleration of the disc is 1.2 rad/s²

Time, t = 3 seconds

We ned to find the angular velocity of the disc once it is at full speed. The relation between the angular velocity and angular acceleration is given as follows :

So, the angular velocity of the disc is 3.6 rad/s.