The vertical height of the stairs is 10.0 m. How much work is done?
2007-02-01 03:47:52 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics
The total work done by the person on the package against the force of gravity would be equal to the final change in gravitational potential energy of the package.
Work = Force * distance applied
Work = ΔPE
ΔPE = mgh = weight * (Δheight)
Weight = 25 newtons
Δheight = 10.0 meters
So the work done on the package is:
Work = (25 Newtons) * (10.0 meters)
Work = 250 Joules
2007-02-01 03:59:13 · answer #1 · answered by mrjeffy321 7 · 1⤊ 0⤋
The potential energy gained that way (and the nergy spent, as well) is mgh, h being the height. Here, mg is already known as being 25 N, right?
If you don't take the person's weight into account, the resulting work is : 25 x 10 = 250 Watt
2007-02-01 11:55:18 · answer #2 · answered by Anonymous · 0⤊ 0⤋