A ball of mass 0.1 Kg. is whirled in a horizontal circle of radius 1 m. by means of a string at an initial speed of 10 R.P.M. Keeping the radius constant, the tension in the string is reduced to one quarter of its initial value. The new speed is - Study24x7
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14 followers study24x7 08 Dec 2018 05:37 PM study24x7 study24x7

A ball of mass 0.1 Kg. is whirled in a horizontal circle of radius 1 m. by means of a string at an initial speed of 10 R.P.M. Keeping the radius constant, the tension in the string is reduced to one quarter of its initial value. The new speed is

A

5 r.p.m.

B

10 r.p.m.

C

20 r.p.m.

D

14 r.p.m.

IIT Entrance
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