A fly sits on a potter's wheel 0.30 m from its axle. The wheel's rotational speed decreases from 4.0 rad/s to 2.0 rad/s in 5.0 s. Determine the wheel's average rotational acceleration.

0.4rad/s²

Explanation:

Angular acceleration is the time rate of change of angular velocity. In SI units, it is measured in radians per second squared (rad/s²)

w1 = 4rad/s, w2 = 2rad/s, t = 5sec, r = 0.30m

a = ∆w/t

a = (w2 - w1) / t

a = (2 - 4) / 5 = - 2/5 =

a = - 0.4rad/s²

The - ve sign indicates a deceleration in the motion

Good luck