The kinetic energy $k$ of a particle moving along a circle of radius $R$ depends on the distance covered $s$ as $k = as^2$ where $a$ is a constant. The force acting on the particle is
$2a\frac{{{s^2}}}{R}$
$2as{\left( {1 + \frac{{{s^2}}}{{{R^2}}}} \right)^{1/2}}$
$2as$
$2a\frac{{{R^2}}}{s}$
A car is moving in a circular horizontal track of radius $10\, m$ with a constant speed of $10 \,m/sec$. A plumb bob is suspended from the roof of the car by a light rigid rod of length $1.00\, m$. The angle made by the rod with track is ........ $^o$
If a particle covers half the circle of radius R with constant speed then
A body is revolving with a uniform speed $v$ in a circle of radius $r$. The tangential acceleration is
The acceleration vector of a particle in uniform circular motion averaged over the cycle is a null vector. This statement is
In circular motion, the centripetal acceleration is given by