how can we increase or decrease gravity?

Question

how can we increase or decrease gravity artificially as done in space researches for astraunauts traning

Answer 1

There is no known way of "increasing gravity" itself. Gravitational force is determined by mass and distance. Obviously, we can't change the earth's mass, and there's no way to change distance either, short of actually launching astronauts into space.

We can, however, simulate high-gravity conditions with centrifuges, rocket sleds and the like. Constant acceleration creates largely the same effect as high gravity.

We can also simulate low-gravity conditions. Astronauts do this by training on airplanes that essentially go into a steep dive, creating free fall conditions. (Of course they can only do this for a short time before pulling out of the dive, otherwise you'd have a plane crash). Astronauts also train underwater, since being under water is in many ways similar to being weightless.

Answer 2

It is my theory that magnets do this very thing every day. Also if you change the spped, distance, and mass of an object the effects of gravity change but not the force itself.

Answer 3

Do Acid,Pot and Crack all at the same time.