A small heavy blo

Given

The length of the rod attaching the block is given as l.

Formula Used

Using the conservation of static and dynamic energy such as potential and kinetic energy, we have the conservation equation as

where

m is the mass of the object, v is the velocity, g is the acceleration due to gravity and h is the height at which the object is kept.

Explanation

Equating the conservation of energy, we get the minimum velocity of the block to complete a vertical circle, the length is double when forming circle

The minimum velocity of the block is