Correct Answer - Option 3 : Newton
The correct answer is Newton.
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Universal Law of gravitation was formulated by Sir Issac Newton in 1686.
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Newton’s law of gravitation: The force of attraction between any objects in the universe is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
- The force acts along the line joining the two bodies.
- The gravitational force is a central force that is It acts along the line joining the centers of two bodies.
- It is a conservative force. This means that the work done by the gravitational force in displacing a body from one point to another is only dependent on the initial and final positions of the body and is independent of the path followed.
Explanation:
If two bodies A and B with mass M & m, where r be the distance between two masses, then gravitational force,
\({\rm{F}} \propto \frac{{{\rm{Mm}}}}{{{{\rm{r}}^2}}} \Rightarrow {\rm{F}} = \frac{{{\rm{GMm}}}}{{{{\rm{r}}^2}}}\)
Here G is Universal gravitational constant (G = 6.67 × 10-11 N-m2/kg2).
- The unit of ‘G’ is Nm2/kg2. The dimensional formula of ‘G’ is [M-1L3T-2].
