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1.(a) (i) State Kepler's laws of planetary motion? (ii) Use Newton's law of gravitation to derive Kepler's third law of universal gravitaion.

1.(a) (i) State Kepler's laws of planetary motion?
         (ii) Use Newton's law of gravitation to derive Kepler's third law of universal gravitaion.

Grade:12

2 Answers

Arun
25750 Points
4 years ago
 
Kepler’s Laws of Planetary Motion
1. Kepler’s first law: The planets move in elliptical orbits around the sun, with the sun at one of the two foci of the elliptical orbit. This means that the orbit or path of a planet around the sun is an ellipse i.e. an oval-shaped and not an exact circle. An elliptical path has two foci and the sun is at one of the two foci of the elliptical path. This law is important for us as it helps us discover if other stars have planets! We cannot see those planets but if the star wiggles back and forth in a complicated way, it may be because a planet makes it move so.
Vikas TU
14149 Points
4 years ago
Dear student 
Please refer the link below 
Good Luck 

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