A particle originally at rest at the highest point of a smooth vertical circle is slightly displaced. It will leave the circle at a vertical distance $h$ below the highest point such that

What is the minimum velocity with which a body of mass $m$ must enter a vertical loop of radius $R$ so that it can complete the loop $?$

A particle slides from the top of a smooth hemispherical surface of radius $R$ which is fixed on a horizontal surface. If it separates from the hemisphere at a height $h$ from the horizontal surface, then the speed of the particle is

As per given figure to complete the circular loop what should be the radius if initial height is $5 \,m$ ………. $m$.

A stone tied with a string, is rotated in a vertical circle. The minimum speed with which the string has to be rotated