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A Ball of Mass M Is Attached to a Thin

Question 57

Multiple Choice

A ball of mass m is attached to a thin string and whirled in a vertical circle or radius r. The tension in the string at point e where the ball is moving with speed v is A) mg. B) mg - mv<sup>2</sup>/r. C) mg + mv<sup>2</sup>/r. D) mv<sup>2</sup>/r. E) None of the above. A ball of mass m is attached to a thin string and whirled in a vertical circle or radius r. The tension in the string at point e where the ball is moving with speed v is


A) mg.
B) mg - mv2/r.
C) mg + mv2/r.
D) mv2/r.
E) None of the above.

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