An object moving in a circular path at constant speed has constant

$A$ particle completes $2$ revolutions in a circular path of radius $3$ cm. The angular displacement of the particle will be (in radian) (in $\pi$)

$A$ particle moves in the $x-y$ plane according to the rules $x = a \sin \omega t$ and $y = a \cos \omega t$. The particle follows:

$A$ particle moves in a circle of radius $25\, cm$ at two revolutions per second. The acceleration of the particle in $m/s^2$ is

$A$ heavy stone is tied to the end of a string and whirled in a horizontal circular path of radius $20 \, cm$ with a constant angular speed. If the centripetal acceleration is $980 \, cm \, s^{-2}$,what is its angular speed?

$A$ particle moves with constant speed $v$ along a circular path of radius $r$ and completes the circle in time $T$. The acceleration of the particle is