Gravity is responsible for keeping all sorts of things in their orbits - planets around the Sun, suns around the Milky Way, moons around their planets, among others.It is also responsible for keeping things together - Earth, for example, would quickly fall apart without gravity.
it is the reaction force at the end of the rod where it is held
Gravity is the force responsible for pulling the water down to Earth, and the water in turn turns the wheel. So in effect gravity is doing all the work.
Gravity and magnetism are not inventions, they are natural phenomena.
The force you are thinking of of is gravity. Well not so much the gravity but the gravitons in the gravity witch give it the force it has. Without gravitons it is actually a very weak force.
force of gravity
True. Gravity is the force responsible for both phenomena.
The force of gravity will change the satellites direction, and therefore its velocity.
That and the magnetic force
The answer is simple: gravity.
The force of gravity.
Gravity in the oceanic crust is responsible for seafloor spreading.