If a body is moving in a vertical circle with constant speed, what remains constant throughout the motion?

A small bob of mass $m$ is attached to a string of length $l$ and is undergoing vertical circular motion. At the highest point of the circle, the tension in the string is zero. What is the speed of the bob at this point?

If a particle is moving in a circle with constant speed, what is its angular acceleration?

What is the minimum velocity at the bottom of a vertical loop of radius $R$ required for a body of mass $m$ to complete the loop?

A body of mass 2 kg attached at one end of light string is rotated along a vertical circle of radius 2m. If the string can withstand a maximum tension of 140.6 N, the maximum speed with which the stone can be rotates is

A particle of mass $m$ is attached to a string of length $l$ and moves in a vertical circle. If the speed of the particle at the top of the circle is $v$, what is the tension in the string at that point?

The maximum and minimum tension in the string whirling in a circle of radius $2.5$ m with constant velocity are in the ratio $5:3$ then its velocity is

Inside a hollow sphere of radius $R$, a small object is released from the topmost point. What is its speed at the bottom?

A body of mass '$m$' is rotated in a vertical circle of radius '$R$' by means of light string. If the velocity of body is $\sqrt {gR}$ while it is crossing highest point of vertical circle then the tension in the string at that instant is

A simple pendulum is oscillating with an angular amplitude ${60^0}$. If mass of bob is 50 gm, then the tension in the string at mean position (in N) is $\left( {{\rm{g = 10}}\,\,{\rm{m/}}{{\rm{s}}^{\rm{2}}}} \right)$

A body is moving in a vertical circle such that the velocity of body at lowest point is critical. The ratio of velocities of body at angular displacements ${60^0}$ and ${120^0}$ from lowest point is