A body is revolving with a uniform speed $v$ in a circle of radius $r$. The tangential acceleration is
$\frac{v}{r}$
$\frac{{{v^2}}}{r}$
Zero
$\frac{v}{{{r^2}}}$
Certain neutron stars are believed to be rotating at about $1\,rev/\sec $. If such a star has a radius of $ 20\, km$, the acceleration of an object on the equator of the star will be
“Write equation of centripetal acceleration for uniform circular motion. Obtain this equations in terms of angular velocity $(\omega )$ and frequency $(v)$ .”
In case of uniform circular motion which of the following physical quantity do not remain constant
The ratio of angular speeds of minute hand and hour hand of a watch is
A car is moving with speed $30$ $m/\sec $ on a circular path of radius $500\, m$. Its speed is increasing at the rate of $2m/{\sec ^2},$ What is the acceleration of the car ........ $m/sec^2$