Question

Asked Oct 20, 2019

Starting from rest, a disk rotates about its central axis with constant angular acceleration. In 9.00 s, it rotates 34.2 rad. During that time, what are the magnitudes of **(a)** the angular acceleration **(b)** What is the instantaneous angular velocity of the disk at the end of the 9.00 s? **(c)** With the angular acceleration unchanged, through what additional angle (rad) will the disk turn during the next 9.00 s?

Step 1

**Given:**

In 9 seconds a disc rotates 34.2 radians.

Step 2

Calculating the angular acceleration:

Step 3

Calculating the instantaneous angular velocity at 9 seconds...

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