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Introductory Physics Homework Help
What is the Work Done by Gravity on an Object Moved Straight Up?
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[QUOTE="NathanLeduc1, post: 4341505, member: 463172"] [h2]Homework Statement [/h2] An object of mass m is moved straight up by a distance h. The work that gravity does on the object is: (a) -mh (b) +mh (c) -mgh (d) +mgh (e) None of the Above [h2]Homework Equations[/h2] Work = ∫F dl PE = mgh [h2]The Attempt at a Solution[/h2] I have a feeling the answer is (c) -mgh because work is done to lift the object. The object is gaining potential energy so it's gaining +mgh and due to Newton's 3rd law, the work done by gravity is -mgh. Is that right? [/QUOTE]
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Introductory Physics Homework Help
What is the Work Done by Gravity on an Object Moved Straight Up?
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