Homework Help: physics

Posted by Anonymous on Monday, January 3, 2011 at 10:46pm.

A person lifts a 5.5 kg cement block a vertical distance 1.1 m and then carries the block horizontally a distance 7.3 m. Determine the work done by the person and by the force of gravity in this process.
J (by person)
J (by force of gravity)

physics - drwls, Tuesday, January 4, 2011 at 8:27am
No work is done during the horizontal motion.

The vertical-motion work done by the person is m g h. (h = 1.1 m)

Gravity does the same amount, but qwith a minus sign.

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