Answer:
F = 482.51 N
Step-by-step explanation:
Given that,
Mass of a child, m = 22 kg
Angular velocity of the merry-go-round,

Let the radius of the path, r = 1.25 m
We need to find the centripetal force acting on the child. The formula for the centripetal force is given by :

So, the required centripetal force is 482.51 N.