State and derive the Universal law of Gravitation. Give unit.
Answers
Answer:
The force is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. In equation form, this is F=GmMr2 F = G mM r 2 , where F is the magnitude of the gravitational force. G is the gravitational constant, given by G = 6.673 × 10−11 N·m2/kg2.
Answer:
Newton's universal law of gravitation derives the expression for the force of attraction between any two objects in the universe.
Explanation:
Every two objects in the universe attract each other with a force (F) that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. If 'M' and 'm' are the masses of two objects and 'd' is the distance of separation between them then we can write from the universal law of gravitation as:
F ∝ Mm
F ∝ 1/d²
By combining these two,
F ∝ Mm/d²
The sign of proportionality can be avoided by multiplying with a constant called the universal gravitational constant (G).
∴ F = G Mm / d²
The unit of the force of attraction, F is Newton (N).