It seems like a simple question, but I get the feeling that there is a catch: You are standing on a plate attached to a pulley. The rope through the pulley is attached to the ceiling with one end and you pull on the other end. Can you lift the plate and yourself? a. Yes, but only the strongest people can do this. b. No, this is principally impossible. c. Yes, most people can do this. My feeling is that this is impossible because you continue to 'push' against the plate while trying to lift yourself. However, I am not really sure. Any thoughts? By the way: I translated the question myself, so let me know if it is incomprehensible. I can always make a small picture to illustrate the question.