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A body describes a circular path of ...

A body describes a circular path of radius 10 m, , with a uniform speed .IF it is acted upon by a centripetal force of 0.4 newton ,then the kinetic energy of the body will be

A

1 joule

B

1.5 joule

C

2 joule

D

3 joule

Text Solution

Verified by Experts

The correct Answer is:
C
`F= (mv^(2))/(r ) " " therefore 0.4 = (mv^(2))/(10) " " therefore mv^(2) = 4 `
` therefore KE = (1)/(2) mv^(2)= 2J`
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