Question

Question 54:
State and explain Kepler’s laws of planetary motion. Draw diagrams to illustrate these laws.

Lakhmir Singh Physics Class 9

Answer 1

Dear Student,

◆ Kepler's Laws of planetary motion-

Kepler described 3 different laws of planetary motion-

(1) Kepler’s Law of Orbits –

• The Planets move around the sun in elliptical orbits with the sun at one focus.

(2) Kepler’s Law of Areas –

• The line joining a planet to the Sun sweeps out equal areas in equal interval of time.

(3) Kepler’s Law of Periods –

• The square of the time period of the planet is directly proportional to the cube of the semimajor axis of its orbit.

Hope this helps you...