Question

A wheel is rotated about a horizontal axle at a constant angular speed. Next it is rotated in the opposite direction with the same angular speed. The acceleration at a point on the top of the wheel in the second case as compared to the acceleration in the first case:

Answer 1

a) Is in the same direction.

Step-by-step explanation:

Since on both cases the wheel is rotated at a constant angular speed the acceleration will only be the centripetal one, which, as the name implies, will be directed at the center of the wheel, so it will point in the same direction on both situations.