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. (3g r)1/2. O b. (g r)/2. Oc. 3g r. O d. 3(g r)1/2.

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. (3g r)1/2. O b. (g r)/2. Oc. 3g r. O d. 3(g r)1/2.

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And The Law Of Gravity

Section: Chapter Questions

Problem 70AP: A 0.275-kg object is swung in a vertical circular path on a string 0.850 m long as in Figure P7.70....

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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:
O a.
(3g r)1/2.
O b. (g r)/2.
O c.
3g r.
d. 3(g r)/2.

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