A light inextensible cord tied at one end to a peg A on a wall passes over a frictionless peg B fixed in level with peg A and supports a load at the other end. Between the pegs the cord is wearing a small ring of mass equal to that of the load. Initially the ring is held in level with the pegs and released. Determine the acceleration of the ring when it passes an equilibrium position(acceleration due to gravity is g).

A light inextensible cord tied at one end to a peg A on a wall passes over a frictionless peg B fixed in level with peg A and supports a load at the other end. Between the pegs the cord is wearing a small ring of mass equal to that of the load. Initially the ring is held in level with the pegs and released. Determine the acceleration of the ring when it passes an equilibrium position(acceleration due to gravity is g).