Two cars of masses $m_1$ and $m_2$ are moving along circular paths of radii $r_1$ and $r_2$ respectively. Their speeds are such that they complete one round in the same time. The ratio of the angular speeds of the two cars is:

$A$ particle is performing $U.C.M.$ along a circle of radius $R$. In half the period of revolution, its displacement and distance covered are respectively

The circular motion of a particle with constant speed is

$A$ point $P$ is moving in uniform circular motion with radius $3 \ m$. Let at some instant the acceleration of the point be $a = (6 \hat{i} - 4 \hat{j}) \ m/s^2$, the position vector be $r$, and the velocity vector be $v$. Choose the correct statement.

Two cars of masses $m_{1}$ and $m_{2}$ are moving in circles of radii $r_{1}$ and $r_{2}$ respectively. Their angular speeds $\omega_{1}$ and $\omega_{2}$ are such that they both complete one revolution in the same time $t$. The ratio of the linear speed of $m_{1}$ to the linear speed of $m_{2}$ is:

$A$ body performing uniform circular motion of radius $R$ has frequency $n$. Its centripetal acceleration is