A body is revolving in a vertical circle with constant mechanical energy the speed of the body at the highest - Physics - Work Energy And Power

Question

A body is revolving in a vertical circle with constant mechanical
energy the speed of the body at the highest point is root over 2gr
the speed of the body at the lowest point is??

Govind · Accepted Answer

Applying principle of conservation of energy between L and H, we have12mvL2=12mvH2+mg2rWe have given, vH=2gr∴ 12mvL2=12m2gr+2mgr⇒vL2=6gr⇒vL=6grThus, speed at the lowest point of the vertical circle is 6gr

A body is revolving in a vertical circle with constant mechanical energy.the speed of the body at the highest point is root over 2gr.the speed of the body at the lowest point is??