Recent content by cxz

Hmm sorry to be a bother but I'm still kind of confused about the equation you gave. Assuming that the torque you are referring to is the torque on the board, then I don't see how there can be a reaction force from the arms and legs of the person acting on the board. The only forces that the...

Hmmm do you mean that the equation should look like this? torque = F*10 - [ ( F*1 + mg*1) + mg*1 ] = F*9 - mg*2? If so, then if the distance between his arms and his center of mass is long enough, wouldn't he still be able to lift himself up?

Hi guys. I haven't had physics in a couple of years and I'm trying to study for the MCATs. I've always had trouble with levers so I would really appreciate it if I could get some help. In particular, the following scenario confuses me: Say you have a man standing on a board, the fulcrum is to...