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