Awheel with a 0.10-m radius is rotating at 35 rev/s. it then slows uniformly to 15 rev/s over a 3.0-s interval.

a. what is the angular acceleration of a point on the wheel?
b. how to do and explain will give lifesaver!

The angular acceleration of a point on the wheel is and it is decelerating.

Explanation:

It is given that,

Radius of the wheel, r = 0.1 m

Initial angular velocity of the wheel,

Final angular velocity of the wheel,

Time, t = 3 s

We need to find the angular acceleration of a point on the wheel. It is given by the rate of change of angular velocity divided by time taken. It is given by :

So, the angular acceleration of a point on the wheel is and it is decelerating. Hence, this is the required solution.

multiple

it is the second option.