A small disc is attached at one end of a light inextensible

Last updated: 6/7/2023

A small disc is attached at one end of a light inextensible string that passes through a hole in a frictionless horizontal tabletop Initially the disc moves on a circle of radius R with kinetic energy K The other end of the string is slowly pulled so that the disc finally moves on a circle of radius R y What is the work w done by the pulling agency A W 0 B W y K C W y 1 K D W y 1 K