I need help in physics!!! PLEEASE?

bob wants to move a 755.0 pound piano and put it in a truck. He is using a dolly whose handle is 5.50 feet long. If he can generate 155.0 pounds of force how far must the center of gravity of the piano be from the dolly wheels

It should be 5.5/755*155=1.13 feet. I.e. the center of gravity should be within 1.13 feet, lesser is ok, more is not.

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