4. A 22.0 kg child is riding a playground merry-go-round that is rotating at 40.0 rev/min. What centripetal acceleration does she experience to stay on if she is 1.25 m from its center? 5. The driver of a 1000-kg car tries to turn through a circle of radius 100 m on an unbanked curve at a speed of 16.0 m/s. The kinetic friction coefficient between the tires and slippery road is u = 0.25. First calculate (a) the magnitude of friction and (b) centripetal force required to make the circular turn. (c) Can the driver make the circular turn without slipping? (a) f = (b) F = (c) 6. A pendulum that consists of a ball (m = 1.50 kg) attached to a light cord rotates in a circular path of radius r = 0.800 m at constant speed v, as shown in Figure. Here the angle 0 = 65°, and we ignore air friction and assume the mass of the light cord is negligible. %3D %3D (a) Calculate the tension T in the cord. T.

4. A 22.0 kg child is riding a playground merry-go-round that is rotating at 40.0 rev/min. What centripetal acceleration does she experience to stay on if she is 1.25 m from its center? 5. The driver of a 1000-kg car tries to turn through a circle of radius 100 m on an unbanked curve at a speed of 16.0 m/s. The kinetic friction coefficient between the tires and slippery road is u = 0.25. First calculate (a) the magnitude of friction and (b) centripetal force required to make the circular turn. (c) Can the driver make the circular turn without slipping? (a) f = (b) F = (c) 6. A pendulum that consists of a ball (m = 1.50 kg) attached to a light cord rotates in a circular path of radius r = 0.800 m at constant speed v, as shown in Figure. Here the angle 0 = 65°, and we ignore air friction and assume the mass of the light cord is negligible. %3D %3D (a) Calculate the tension T in the cord. T.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter6: Uniform Circular Motion And Gravitation

Section: Chapter Questions

Problem 23PE: (a) A 22.0 kg child is riding a playground merry-go-round that is rotating at 40.0 rev/min. What...

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