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Unread 05-12-2005, 10:50
KenWittlief KenWittlief is offline
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Re: Need a realistic Statics Problem

yes, you are both correct.

when you move the box to the right the twist on the frame increases - the frame wants to deform on both sides of the red arms, but the torque required to lift the L shape platform up and down remains constant

the reason its counter-intuitive is this: if you used a straight arm, then the further to the right you moved the box, the further it would move up and down (in feet) per degree of arm rotation, and therefore the torque required to move it changes

but with the double arms the box moves the same vertical distance no matter where you place it on the L shape, so the torque is the same.