Work is force x distance/displacement. The exact definition is something I'm a little confused about since my professor said it could either be distance or displacement. So going with that, if the displacement is 0, then why isn't the work performed on an object 0?
I used an example when I explained my question to the professor. If you push on a cardboard box around a circular track (like in a school field), and the position of the box is the same on its return trip, then the displacement is 0. So regardless of the force exerted on the box, wouldn't F x 0 = 0, thus the work performed on the box being 0?
My professor said not to focus too much on the definitions of displacement/distance and that my statement is not necessarily true, and to figure it out on my own why the work isn't 0. I still don't understand this concept at all and I'm trying to understand why a displacement of 0 doesn't necessarily mean that Work performed is 0 either.