Answered: A 2 kg ball moves in a circle of radius…

A 2 kg ball moves in a circle of radius 10m. It makes 20 revolutions every 4 seconds. What is the (a) frequency? (b) Period (c) Centripetal acceleration (d) centripetal force?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter11: Gravity, Planetary Orbits, And The Hydrogen Atom

Section: Chapter Questions

Problem 6OQ: Suppose the gravitational acceleration at the surface of a certain moon A of Jupiter is 2 m/s2. Moon...

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Question

A 2 kg ball moves in a circle of radius 10m. It makes 20 revolutions every 4 seconds. What is the (a) frequency? (b) Period (c) Centripetal acceleration (d) centripetal force?

a. f = 5 rev /s , T= 0.2s , ac = 9869.6 m/s2 Fc =19,739 N

b. f = 5 rev /s , T= 0.2s , ac = 9869.6 m/s2 Fc =18,739 N

c. f = 3 rev /s , T= 0.2s , ac = 9869.6 m/s2 Fc =19,739 N

d. f = 5 rev /s , T= 0.8s , ac = 9869.6 m/s2 Fc =19,739 N

Definition Definition Force on a body along the radial direction. Centripetal force is responsible for the circular motion of a body. The magnitude of centripetal force is given by F C = m v 2 r m = mass of the body in the circular motion v = tangential velocity of the body r = radius of the circular path

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