A 0.400 kg rock is balancing on the edge of a cliff 500m above a valley. What is the gravitational potential energy of the rock with respecet to the valley below?
HELP please :)
2006-11-02 03:08:05 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Gravitational Potential Energy = m*g*h joules
where m - mass of the object in kg
g - accelaration due to gravity in m/s^2
h - height of the object from the reference in m
Here the height from reference is 500m
g is taken to be a constant and its value is 9.81m/s^2 though it may vary slightly with latitude, altitude and other such factors.
Mass is given as 0.400kg
Thus Potential energy = 0.400 * 9.81 * 500
Potential Energy = 1962 joules
Hope so u got wat u needed.
2006-11-02 03:16:21 · answer #1 · answered by Arun R 2 · 0⤊ 0⤋
gravity energy = GM x m/ R
E = G x5.98^24 x400 / (6.378^6 + 500)
to get exact answer you need a computer to calculated down to several decimal place.
Howerver ,you can approximate by neglecting the 500 meters.
2006-11-02 11:20:02 · answer #2 · answered by goring 6 · 0⤊ 0⤋
mgh
2006-11-02 11:14:53 · answer #3 · answered by Anonymous · 0⤊ 0⤋