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To keep a particle moving with constant ...

To keep a particle moving with constant velocity on a frictionless surface, an external force .

A

`("mv"^(2))/(F)`

B

`("mv"^(2))/(F cos theta)`

C

`("mv"^(2))/(F sin theta)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
Force is perpendicular to
`R=(v^(2))/(a_(1))implies R=("mv"^(2))/(F)`
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