2007-09-19 11:06:25 · 4 answers · asked by lolabarry 2 in Science & Mathematics ➔ Physics
What is the change of potential energy as a result of this move?
2007-09-19 11:34:49 · update #1
W=FD (Work=force*distance)
Since the distance is given, we need to find the force. The normal force of the crate due to the earth's gravitational pull is 490.5 newtons. Since this is how much force you need to exert over 1.5m, your work done is 490.5(1.5)=737.75J
This number can also serve as the potential energy of the box
2007-09-19 15:57:14 · answer #1 · answered by Danny 4 · 1⤊ 0⤋
What happens to artwork accordingly? artwork gets stored in ability capability. In physics, this accepted equation holds real: W(performed) = -replace PE (for the conservative tension-right here its gravity) From the numbers, calculate PE stored: (50.0)(9.8)(a million.5) = ___J. The unfavorable of it somewhat is how plenty artwork is finished by ability of gravity. The useful of that selection is how plenty artwork you or a rope/kangaroo/gadget does in lifting the crane. (a) you basically spoke back b; it somewhat is comparable to section A. C: mgh = a million/2mv^2 root(2gh) = v v = sqrt (2 x 9.8 x a million.5) word that this equation is self sufficient of mass m.
2017-01-02 10:02:42 · answer #2 · answered by ? 3 · 0⤊ 0⤋
Study the following. It should provide for a better understanding of the whole concept:
http://www.glenbrook.k12.il.us/gbssci/phys/Class/energy/u5l1aa.html
2007-09-20 14:04:51 · answer #3 · answered by Anonymous · 0⤊ 0⤋
750J
2007-09-19 11:29:03 · answer #4 · answered by supastremph 6 · 0⤊ 0⤋