Assignment # 4

There are hundreds of moons in our solar system, and they come in many shapes, sizes, and types. Does Kepler’s law of planetary motion apply to moons? Explain.
Why were Kepler’s Laws so important? What paradigm shift took place due to his laws?
If the same force acts on the Moon from the Earth -and- on the Earth from the Moon, why does the Moon orbit the Earth and not vice versa?
How is weight different from mass. If you really just want to weigh less (assuming infinite budget and resources!), what should you do?
Newton’s addition to Kepler’s third law made it possible to know the mass of a star by looking at how planets orbit around it. How would you expect planets move if they orbited a very massive star compared to a very non-massive star (assume the same orbital distance)?

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