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    emmy123's Avatar
    emmy123 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Feb 16, 2009, 10:18 PM
    Potential Energy
    Which box has more potential energy:

    Box A: has been lifted straight up off the ground 2 feet

    Box B: has been pushed up an incline plane that has a height of 2 feet

    # A. Box A has more PE
    # B. Box B has more PE
    # C. They have the same PE
    # D. Impossible to tell
    Shelesh's Avatar
    Shelesh Posts: 55, Reputation: 4
    Junior Member
    		  
    #2

    Feb 17, 2009, 05:37 AM

    PE depends on height, mass, and the acceleration due to gravity.

    If the mass is the same and if the experiment is carried out on earth ( g = 9.81 m/s) :) , I'll choose answer # C.
    Aaahopqxpqxp's Avatar
    Aaahopqxpqxp Posts: 6, Reputation: 1
    New Member
    		  
    #3

    Apr 23, 2009, 04:27 AM

    If both boxes have equivalent masses, then by the equation E(p)=mgh (where e(p) is potential energy, m is mass, and g is gravity) then both height, mass and gravity are the same , so answer C.
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