Why F ∝ 1/d² ? | Inverse Square Law in Universal Gravitational Law | Step-by-step derivation |Hindi

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This video is about the very interesting question - Why F ∝ 1/d² ? in Inverse Square Law or Why Gravitational force is inversely proportional to the square of distance between two objects?
We will see about the Kepler's Law for the motion of the planets and the base question provided by him, and which was used by Newton to derive the relation F ∝ 1/d².
Also, we will go step-by-step to understand the whole derivation about this and learn how F ∝ v²/R by Newton and R³/T² = constant by Kepler leads to the development of Universal Law of Gravitation.
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