On Tue, 22 Jun 2010 11:24:29 -0400, W1TEF
wrote:

What you are effectively doing is reducing the
amount of energy required to move the 350 pounds by the use of
mechanical advantage. It seems like you are only lifting 35 pounds.

Wrong. The energy is one foot pound per pound per foot. Duh.
Mechanical advantage can reduce the _force_ while incrieasing the
distance, with the total energy required remaining the same.

Casady