Q7 of 176 Page 100

Which of the Kepler’s laws of planetary motion led Newton to establish the inverse-square rule for gravitational force between two bodies?

Kepler’s third law of planetary motion (i.e., r3∝T2) led Newton to establish inverse square rule. It was coined from the law of gravitation.


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5

Name the scientist who explained the motion of planets on the basis of gravitational force between the sun and planets.

 6

States the Kepler’s law which is represented by the relation r3∝ T2

 8

Name the property of earth which is responsible for extremely small acceleration being produced in it as a result of attraction by other small objects.

 9

What is the acceleration produced in a freely falling body of mass 10 kg? (Neglect air resistance)