A particle of mass $m$ describes a circle of radius $r$. The centripetal acceleration of the particle is $4/r^2$. What will be the momentum of the particle?
A particle of mass $m$ describes a circle of radius $r$. The centripetal acceleration of the particle is $4/r^2$. What will be the momentum of the particle?
- A
$2\, m/r$
- B
$2m/ \sqrt r$
- C
$4m/ \sqrt r$
- D
$4 \,m/r$
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