Explore all the possible laws of gravity - that is, all the universes the simulation will let you build (click on My Law to set the law of gravity by hand).
- What types of motion do you observe?
- Which of them give rise to planetary motion that obeys Kepler's Second Law? (What feature of the simulation helps you answer this question?)
- Which of them give rise to planetary motion that obeys Kepler's First Law?
- How could you tell whether Kepler's Third Law was being obeyed?
- What do you think is the law of gravity in our universe?
