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"Tom weighs 150lb and he wants to lift a 600lb stone lid form a well. We give him a 12ft, unbreakable lever that has one end attached to the stone (at the COM), and a secure axis. He positions the lever at 30 degrees above horizontal to the ground, and places his hands 6 inches from the end of the lever. He hangs from the lever without "jumping around". Where would he need to place the axis to enable him to lift the stone lid?

I dont even know where to start with this problem. It is in our powerpoint on torques. I tried going to get help for this problem at tutoring, but was still unable to understand how to do the problem.