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emmy123
Feb 16, 2009, 10:18 PM
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
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
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.