A particle moves in the `xy` plane under the influence of a force such that its linear momentum
Channel: Doubtnut
Date: 2020-07-12

A particle moves in the `xy` plane under the influence of a force such that its linear momentum is `vecP(t) = A [haticos(kt)-hatjsin(kt)]`, where `A` and `k` are constants. The angle between the force and momentum is