How can be gravitational energy be converted into electrical energy?

Question

since energy is converted into other energy.it can't b destroyed,so there may be some means to convert it.it will b of great use to man kind since it is in plenty.

Answer 1

.its called a dam. rain falls because of gravity and then it flows into a hydroelectric turbine.

Answer 2

Gravitational Energy To Electrical Energy

Answer 3

What do you mean by "will be" ?!!!!
For several centuries, the water wheel was used to power saw-mills and flour mills. It utilized one of two principles: either a water falling on the blades of a paddle wheel, or water flowing fast under the partially submerged water-wheel.
Falling water utilized the gravitational potential energy of water to drive the wheel and connected machinery. The water was stored in a dam above the water wheel and was available at any time.
Flowing water utilized the kinetic energy of water to do basically the same. Water got its kinetic energy from flowing down a steep slope; that is, it converted its gravitational potential energy into its kinetic energy. The only drawaback with this method was that it was only available when there was plenty of flowing water. Thus the first method was more widely used.
Basically, both methods utilise the gravitational potential energy.

Can you guess why we, in the North America, call our "electricity" by the name of "HYDRO"?
Direct conversion of gravitational energy of water to electricity has been around for about 100 years. Nicola Tesla designed the Niagara Falls generating stations. Canada generates about 15 to 20 % of electricity from hydro stations. And I suppose that US percentage is similar. Europe too, has many hydro-generating stations.

As you see, your suggestion is about 100 years too late. True, we might build more small hydrogenerating station, supplying power to small communities of perhaps 100 houses. That would ease our dependance on fossil-fuel- or nuclear- powered station, and also reduce the amount of emitted pollution, and green house gasses. But we have harnessed most, if not all, available sources for large generating stations.

Answer 4

To remove the confusion, rather than continue it: gravity and magnetism are not forms of energy, they are forces and fields. The water at the top of the dam has a higher potential energy than the water at the bottom of the dam. Open a sluice gate, and that potential energy is converted into kinetic energy. Put a turbine in its path, and some of that kinetic energy is converted to electrical potential energy, which is more easily and efficiently transported to other locations.

Answer 5

It happens in my hybrid car anytime I am driving down a hill. Of course, the electric energy gets converted back to gravitational energy when I go up the next hill. And that, of course, is the problem. As the first law of thermodynamics is often paraphrased, you can't win.

Answer 6

For the best answers, search on this site https://shorturl.im/axTeI

"#1 What causes gravity?" Per Einstein's General Relativity, the currently most comprehensive description of gravity that Humanity has, Gravity is actually NOT a force at all. That was Newton's view. Albert said that what we perceive as an attractive force between massive bodies is actually a process of one body trying to move in a straight line within the vicinity of another body who's mass has induced a curvature on space(-time) in that region. The old analogy is a bowling ball on a trampoline with a golfball rolled past it. The golf ball will "orbit" the bowling ball that is sitting at the bottom of a depression in the rubber of the trampoline. The trampoline rubber is the fabric of space-time, the bowling ball is the sun, and the golf ball is earth. You can apply this to Earth-Moon system too. Now you zoom in on the golf ball so you can perceive its distortions to the trampoline rubber (very slight compared to the bowling ball-sun), and roll a copper BB past the golf ball....Same process occuring, just at different scales. Einstein's GR (relatively enormous distances, massive gravity fields) can be reduced to Newton's Mechanics (relatively short distances and small gravity fields), which is what I tried to illustrate with the trampoline, bowling ball, golf ball, copper BB. --------------------------------------... "Like what is the force pulling us down to the earth? ...[Gravity, damn it.] Where is it coming from? [Newton's answer, or Einstein's?] Law of attraction? Well still, what is creating that energy? [Ah, Newton then] Or what is holding that energy? If is exists then it should be able to be used or transformed into energy." --------------------------------------... So Newton said Gravity is a Force. What did he say caused that Force? He didn't. In fact he explicitly wrote that he was leaving that up to others to determine; he was comfortable to let the Force be "caused" by God's simple willing it to be. Einstein said Gravity is not Force, it is a particular geometry of space-time (he used Reimmann Geometry) that for us APPEARS as forces acting between bodies at a distance. Neither viewed Gravity as Energy, and only one thought of it as a force. But Newton understood that Forces are not Energy, and Energy is not a Force. Indeed the concept or term "Force" was introduced by Newton as that "mysterious causative agent" of attraction. We've gotten used to it since then. I like to believe Humans could devise a device that could induce gravitational fields, which give rise to gravitational force, which could be used to move objects....sure, why not? But you should see immediately that this is quite some ways off. If we go purely by Einstein's GR, we need HUGE gravitational fields that would be our doom. But if we can develop a physically accurate synthesis of the Quantum and GR, so that we can induce and control microscale process related to gravity (hahaha, i said microscale...quite a bit smaller than that actually) maybe we could get something small enough to put in a cupboard but able to generate fields high enough to get some real work done. Think: It takes the whole earth to get our grav field (the downward acceleration we experience). How big a bowling ball would you have to pop out of thin air so that nearby objects "think" they are too high off the "ground" and fall toward the object? How close would the bowling ball have to be to exert this accelerating attraction? Pop the bowling ball up in the corner of the kitchen, and it would be cool to have it drag your garbage from all around the house then (after deactivating) drop it into the waste basket...!!!!!! Only the future will tell.

Answer 7

It's already been done using dams...creating a man-made "waterfall" which is then used to turn the gears of a large generator. I think Hoover Dam is the first such example.

Answer 8

How about a pendulum attached to an electromagnetic generator. or water falling off Niagra Falls turning a flywheel attached to an electromagnetic generator.

Answer 9

Well a piston can use gravity to help turn itself and create energy

Answer 10

by making a dam