Question

A tennis ball is a hollow sphere with a thin wall It is set rolling without slipping at 4.12 m/s on a horizontal section of a track as shown in the figure below. It rolls around the inside of a vertical circular loop of radius r = 46.7 cm. As the ball nears the bottom o the oop, the shape o the track deviates rom a perfect circe so that the bal eaves the track at a point 80 cm e ow the horizontal (a) Find the ball's speed at the top of the loop 2.8 Your response differs from the correct answer by more than 10%. Double check your calculations. m/s (b) Demonstrate that the ball will not fall from the track at the top of the loop. This answer has not been graded yet. (c) Find its speed as it leaves the track at the bottom. Your response differs from the correct answer by more than 10%. Double check your calculations. m/s d) Suppose that static friction between ball and track were negligible so that the ball slid instead ofling. Would its speed then be higher, lower, or the same at the top of the loop? higher O lower the same The ball never makes it to the top of the loop. (e) Explain your answer

Answer 1

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