What is work done by centripetal force in moving on body half-cycle on a circular path of radius 30m?
A
`(mv^(2))/(r ) xx(2pi r)/(3)`
B
`(mv^(2))/(r )xx(pi r^(2))/(3)`
C
Zero
D
`(mv^(2))/(r ) xxpi r`
Text Solution
Verified by Experts
The correct Answer is:
C
C.P force is perpendicular to the direction of motion ` therefore ` Work `= vec F . "" vecS = 0 `
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