The net applied force on a body in uniform circular motion should always be
Constant in magnitude and parallel to direction of motion
Constant in magnitude and perpendicular to direction of motion
Gravitational in nature
Zero
A stone tied to the end of a string $80\; cm$ long is whirled in a horizontal circle with a constant speed. If the stone makes $14$ revolutions in $25\; s$, what is the magnitude and direction of acceleration of the stone ?
The ratio of period of oscillation of the conical pendulum to that of the simple pendulum is : (Assume the strings are of the same length in the two cases and $\theta$ is the angle made by the string with the verticla in case of conical pendulum)
body moves with constant angular velocity on a circle. Magnitude of angular acceleration
The driver of a car travelling at velocity $v$ suddenly see a broad wall in front of him at a distance $d$. He should
For a particle in circular motion the centripetal acceleration is