A.)A 38.0 kg child is riding a playground merry-go-round that is rotating at 55.0 rev/min. What centripetal force (in N) is exerted if he is 1.25 m from its center? (Enter the magnitude.) B.)What centripetal force (in N) is exerted if the merry-go-round rotates at 4.5 rev/min and he is 8.00 m from its center? (Enter the magnitude.) C.) Compare each force with his weight. (Enter the ratios of the magnitudes.) F(a) w = F(b)

(a) A 49.0 kg child is riding a playground merry-go-round that is rotating at 30.0 rev/min. What centripetal force (in N) is exerted if he is 1.25 m from its center? (Enter the magnitude.) N (b) What centripetal force (in N) is exerted if the merry-go-round rotates at 2.0 rev/min and he is 8.00 m from its center? (Enter the magnitude.) N (c) Compare each force with his weight. (Enter the ratios of the magnitudes.) F(a) %3D (9). W

3. You stand on a merry-go-round which is spinning at f = 0.25 revolutions per second. You are R= 200 cm from the center. Figure-3 (a) Find the angular speed w at which it is spinning. (b) Find the centripetal acceleration, a, with which it is spinning. (c) What is the minimum coefficient of static friction 4, between your shoes and the floor that will keep you from slipping off?

(a) A 23.0 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 1.50 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 5.00 m from its center? (Enter a number.) N

(a)      A 19.0 kg child is riding a playground merry-go-round that is rotating at 50.0 rev/min. What centripetal force (in N) must she exert to stay on if she is 2.50 m from its center? (Enter a number.)N (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 5.00 m from its center? (Enter a number.)N (c)      Compare each force with her weight. (For each answer, enter a number.) (force from (a))/(weight) = (force from (b))/(weight)=