Question
TWO EQUAL MASSES ARE ATTACHED TO TWO ENDS OF A SPRING CONST. k THE MASSES ARE PULLED OUT SYMMETRICALLY TO STRECH SPRING BY A LENTH x OVER ITS NATURAL LENTH. WORK DONE BY THE SPRING ON EACH MASS IS -1/4kx2. HOW
Joshi sir comment
total work done on the spring = 1/2kx2
so work done by the spring = -1/2kx2
this work is done on 2 masses so work done by the spring on 1 mass = -1/4kx2