A particle travelling horizontally with speed u collides and

Last updated: 6/9/2023

A particle travelling horizontally with speed u collides and sticks with a particle having double its mass hanging vertically at rest at the end of light inextensible string of length 7 If string rotates through an angle 60 before its velocity becomes zero then value of u will be 3gl 2 2gl 2gl 3 fgl