A particle of mass $m$ is moving along a trajectory given by
$x = x_0 + a\, cos\,\omega_1 t$
$y = y_0 + b\, sin\,\omega_2t$
The torque, acing on the particle about the origin, at $t = 0$ is
  • A$m{y_0}a\omega _1^2\hat k$
  • B$m\left( { - {x_0}b + {y_0}a} \right)\omega _1^2\hat k$
  • C$ - m\left( { - {x_0}b\omega _2^2 + {y_0}a\omega _1^2} \right)\hat k$
  • D
    Zero
JEE MAIN 2019, Diffcult
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