centripetal force
That's the mutual gravitational force of attraction between the satellite and the central body that it's orbiting.
That's the mutual gravitational force of attraction between the satellite and the central body that it's orbiting.
changes the direction of a force
Force changes either the speed or the direction of motion, or both.
when it changes its direction
A machine that changes only the direction of force has a mechanical advantage of 1. This is because it does not multiply the input force, but rather changes its direction to make work easier.
A fixed pulley changes the direction of the input force without changing its magnitude. It can make it easier to lift or move an object by allowing the force to be applied in a more convenient direction.
The force that changes the direction of a compass needle is called the magnetic force, which is generated by the Earth's magnetic field.
Pulleys change the direction of a force.
That's the mutual gravitational force of attraction between the satellite and the central body that it's orbiting.
... direction of a force.
Friction