Answer:
T = 2.28 s
Step-by-step explanation:
Given that,
The radius of the wheel, r = 0.4 m
The tangential velocity of the wheel, v = 1.1 m/s
We need to find the period of the ball as it travels around the wheel. Let it is T. We know that, the tangential speed is given by :

So, the period of the ball is equal to 2.28 s.