(a) A 15.0 kg child is riding a playground merry-go-round that is rotating at 40.0 rev/min. What centripetal force (in N) must she exert to stay on if she is 3.00 m from its center? (Enter a number.)

(b) What centripetal force (in N) does she need to stay on an amusement park merry-go-round that rotates at 3.00 rev/min if she is 7.00 m from its center? (Enter a number.)

(c)Compare each force with her weight. (For each answer, enter a number.)
(force from (a))/(weight) =
(force from (b))/(weight) =