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A boy is on a Ferris wheel, which takes him in a vertical circle of radius 7.6 m once every 15.0 s.
(a) What is the angular speed of the Ferris wheel?
(b) Suppose the wheel comes to a stop at a uniform rate during one quarter of a revolution. What is the angular acceleration of the wheel during this time? (Enter the magnitude of the angular acceleration.)
(c) Calculate the tangential acceleration of the boy during the time interval described in part (b). (Enter the magnitude of the tangential acceleration.)
An Earth satellite moves in a circular orbit 644 km above Earth's surface with a period of 97.40 min, What are the magnitude of the centripetal acceleration of the satellite
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