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A particle does uniform circular motion ...

A particle does uniform circular motion in a horizontal plane. The radius of the circle is 20 cm . The centripetal force acting on the particle is 10 N . It's kinetic energy is

A

0. J

B

0.2 J

C

2.0 J

D

1.0 J

Text Solution

Verified by Experts

The correct Answer is:
D
`(mv^(2))/r =10 rArr 1/2 mv^(2) = r/2 xx 10 = (0.2 xx 10)/2 = 1 J`
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