Kindly show equation & answer all the question please :-)

(a) A 23.0 kg child is riding a playground merry-go-round that is rotating at 35.0 rev/min. What centripetal force (in N) must she exert to stay on if she is 1.50 m from its center? (Enter a number.) Z 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.) Z (c) Compare each force with her weight. (For each answer, enter a number.) (force from (a))/(weight) ( force from (b))/(weight) =