Thanks a lot.
1) Use the formula for energy to find the missing information.
mass = 150 kg; height = 40 m
GPE = _________________________________
2)Calculate energy to answer each question.
How high would you have to lift a 45 kg weight to give a gravitational potential energy of 11,025 Joules (J)
_______________________________________
please only answer if you actually know the answer, and please, no smart coments.
2007-02-07 11:02:22 · 2 answers · asked by Anonymous in Education & Reference ➔ Homework Help
1) Energy=Mass x gravity x height
=150kgx9.8m/s/sx40m
ans=58800J
2)Height=Energy / Mass x gravity
=11025J / 45kg x 9.8m/s/s
ans=25m
2007-02-08 07:34:03 · answer #1 · answered by Bee 1 · 0⤊ 0⤋
Gravitational Potential Energy = mgh
m = mass, g = gravitational acceleration, h = change in height.
Assume g = 9.81 m/s/s
1) 58860 J
2) 25 m
2007-02-07 19:07:43 · answer #2 · answered by feanor 7 · 1⤊ 0⤋