and an energy source is required in order to perform work, what is the energy source for the force of gravity?
2006-11-03 06:45:13 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Gravity is a form of kinetic energy. The sum of the vectors for any gravitational system is always zero. So, energy is neither created or destroyed.
BTW. Mass also has to be taken into account. The destruction of mass in the sun is what created the radiant energy the composes sunshine.
2006-11-03 06:52:49 · answer #1 · answered by SPLATT 7 · 1⤊ 2⤋
Don't confuse your units. Energy is not force.
Energy from gravity is generally potential energy or mass X height X g. I'm talking about relatively small objects here, but you can do the math using "Big G" for each body's attraction on the other. When something moves under gravity's pull it's kinetic energy.
A equivalent question is "How much work (energy used) does a magnet do to hold itself up on the refridgerator?" None.
2006-11-03 15:07:03 · answer #2 · answered by Anonymous · 1⤊ 1⤋
The force of gravity has nothing to do with the magnetic poles. Gravity is the result of two seperate masses attraction to each other. Your body pulls on the Earth proportianely to what it pulls on you. It's the mass of the Earth that holds you to the surface. Not the poles. It's true that energy isn't created or destroyed, but it does transition into different types of energy. The mass of a body is considered stored energy, or potential. Energy being used is kinetic.
2006-11-03 14:57:47 · answer #3 · answered by Daryl E 3 · 0⤊ 1⤋
Energy and mass are interchangeable by Einstein's famous equation e=mc^2
In other words, mass is energy.
Force is calculated by the Newton's 2nd law of motion
F=ma
Force = mass x acceleration
Your energy source is the mass that is distorting space time.
2006-11-03 15:02:16 · answer #4 · answered by mmmodem123 3 · 0⤊ 0⤋
Gravitational field?
Well people have been trying to figure out how gravity works for some time now...
And gravity is a phenomenon it hasn't been explained yet. Everything is pretty much theory.
2006-11-03 14:50:14 · answer #5 · answered by eugene w 1 · 0⤊ 0⤋
The energy source I think is basicly the magnetic forces that surrounds the Earth and also the sun's heat that forms the weather. It's more obvious in heavier objects then light objects if you want to see it at work.
2006-11-03 14:58:15 · answer #6 · answered by Farishna B 2 · 0⤊ 2⤋
The sourse for gravity is the magnetic pull of the two poles of the earth.
2006-11-03 14:48:50 · answer #7 · answered by doggenfreek 3 · 0⤊ 3⤋