A22.0 kg child is riding a playground merry-go-round that is rotating at 40.0 rev/min.

what centripetal force must she exert to stay on if she is 1.25 m from its center?

what centripetal force does she need to stay on an amusement park merry-go-round that rotates at 3.00 rev/min if she is 8.00 m from its center?

a) 482.5N

b) 17.4N

Explanation:

40 rev/min = 40 * 2π / 60 = 4.2 rad/s

3 rev/min = 3 * 2π / 60 = 0.314 rad/s

The centripetal acceleration that the child is subjected to

And their centripetal force is

From here we can plug the number in

(a)

(b)

you go to your settings preference and in the end youll see sth that says "i want to delete my acc" click on it and u'll acc will be deleted but u have to wait.

that would be because of both gravity and friction. so     c