A particle is moving in a circle of radius R with constant speed v , if radius is double then its ce

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3-2.Motion in Plane

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A particle is moving in a circle of radius $R$ with constant speed $v$, if radius is double then its centripetal force to keep the same speed should be

ADoubled

BHalved

CQuadrupled

DUnchanged

Solution

(b)$\;F = \frac{{m{v^2}}}{r}$. For same mass and same speed if radius is doubled then force should be halved.

Standard 11

Physics

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