2006-06-24 01:02:55 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Physics
According to the theory of energy conservation, it is impossible to create energy from nothing, thus, the only way gravity can be used to add energy to a system is by increasing the kinetic energy of two objects by accelerating them towards each other, a trade off of potential energy for kinetic energy. This energy is generally short lived, however, as the two objects eventually collide and the kinetic energy from movement become heat from impact.
The only way you could effectively harness the energy of gravity, is to discover where objects will impact each other, and then place a generator there which can make use of the energy resulting from the collision of those 2 objects.
2006-06-24 01:06:29 · answer #1 · answered by nomae_pl 2 · 1⤊ 1⤋
Gravity is used as a source of energy, e.g., in hydroelectric generation, the potential energy is in the falling water. Other than that, gravity is such a diffuse source, that its impractical as a practical source of energy.
A pendulum will always slowly halt unless driven by an outside source. That's why you wind a clock.
2006-06-24 08:09:55 · answer #2 · answered by williegod 6 · 0⤊ 0⤋
I remember a long time ago reading something about a device that NASA dragged behind the space shuttle in space that used gravity, or was it the magnetic fields? I guess it only generated barely enough to power a light bulb, but I found it interesting. I can't seem to find any more info on it though.
2006-06-24 08:22:01 · answer #3 · answered by Anonymous · 0⤊ 0⤋
In a very limited fashion. You will have to use just as much energy as you will receive to start the reaction. IE. you will use x pounds of force to lift the pendulum weights to get x energy back.
2006-06-24 08:07:10 · answer #4 · answered by nevyn55025 6 · 0⤊ 0⤋
In that the force of gravity performs work - keeping oceans and ourselves in place against the rotational force of our planet, it is an energy source, c2=E/m. The problem is that we cannot store this force in any manner. It is like keeping your thoughts stored in you mind. They are there and then they aren't, yet you always have more.
2006-06-24 14:22:44 · answer #5 · answered by Anonymous · 0⤊ 0⤋
If your physics prof has asked you if gravity can ASSIST you in producing energy....the answer is yes.
Hydro Electric Power
have a nice day!
xxx
2006-06-24 14:49:07 · answer #6 · answered by None of your business 2 · 0⤊ 0⤋
A falling weight is used to operate a clock.
The falling water is made to rotate turbine.
Rain water is stored as ground water due to gravity.
2006-06-24 08:20:33 · answer #7 · answered by Pearlsawme 7 · 0⤊ 0⤋
There one a ready! Hydroelectric power. Generate electricity through falling water.
2006-06-24 08:09:29 · answer #8 · answered by ledanson 1 · 0⤊ 0⤋
maybe but im not sure enough
2006-06-24 08:06:36 · answer #9 · answered by Simple gurl 4 · 0⤊ 0⤋