Recent content by vishuboy

Now I get it, this means when i actually bring it down, it does work on me. To counter that my energy is expended. Am i right? Thanks for the help :)

Hi, I've been thinking on this for a while, any help would be great :) I have a box placed over a table. There's a pen kept over the box. What I do here is move the pen slowly, without changing its velocity and bring it down on the table. Assuming the table and box are at a height h1...