Planetary motion and gravity
Newton, as a young man of 24, guessed that gravity might provide the force to keep the planets in their orbits. Some simple demonstrations illustrate the connection between gravitational forces and planetary phenomena.
- The inverse square law with light
- Sketching a satellite orbit and predicting its period
- Spinning demonstration with V-channel
- Model of the oblate Earth
- Precession of the equinoxes
- Model to illustrate precession of the Earth