Physics 3 - 13.3 Orbital Forces

HideShow resource information

What provides the centripetal force for planets and satellites?

  • In 1687, Newton published "Principia", the central concept of which was that all particles in the universe attract all other particles
  • The size of the force between two objects depends on their masses and how far apart they are

F  =  Gm1Gm2


Where 'r' is the distance between the centre of masses of each object and G is the universal gravitational constant (6.67x10-11Nm2Kg-2)

The bigger the mass of the bodies, the bigger the force of gravity between them. As the distance between two bodies increases, the force…


No comments have yet been made

Similar Physics resources:

See all Physics resources »See all Forces and Motion resources »