Recent content by hoho0304

  1. H

    What is the restorative torque applied to the disk in a pulley system?

    Hi everybody, I was doing my physics homework but I found that I cannot figure out how to do it, here is the question: http://imageshack.us/photo/my-images/202/phyl.jpg/" I don't quite understand how to calculate the torsional spring constant, so explanation on part a is enough:D Thanks...