A stone of mass m is attached to a string and is rotated in a vertical circle of radius r. at bottom of the track, the tension in the string is 4 times the weight of the stone. The velocity of the stone at this point is: O a. (g r)/2. O b. (3g r)1/2. 3(g r)/2, O d. 3g r. Oc.

A stone of mass m is attached to a string and is rotated in a vertical circle of radius r. at bottom of the track, the tension in the string is 4 times the weight of the stone. The velocity of the stone at this point is: O a. (g r)/2. O b. (3g r)1/2. 3(g r)/2, O d. 3g r. Oc.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter6: Applications Of Newton’s Laws Of Motion

Section: Chapter Questions

Problem 46PQ

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Question

A stone of mass m is attached to a string and is rotated in a vertical circle of radius r.
at bottom of the track, the tension in the string is 4 times the weight of the stone.
The velocity of the stone at this point is:
(g r)1/2,
a.
O b. (3g r)1/2.
O c.
3(g r)1/2.
O d. 3g r.

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