Quick question about net external work
Got a block (A) attach to Spring which attach to a Wall
Hand pushes A toward the wall which compress the Spring
So hand is doing positive work on A, W = F*D, work is whatever force by hand times distance..
But work done ON the spring BY the wall is zero right? wall didn't move, spring didn't move?
if zero for the wall, then the net external work on the system (block A + Spring) is just the work done by hand, the same W = F*D ?
Got a block (A) attach to Spring which attach to a Wall
Hand pushes A toward the wall which compress the Spring
So hand is doing positive work on A, W = F*D, work is whatever force by hand times distance..
But work done ON the spring BY the wall is zero right? wall didn't move, spring didn't move?
if zero for the wall, then the net external work on the system (block A + Spring) is just the work done by hand, the same W = F*D ?