if anyone studying good in physics have time please explain me universal law of gravitation (class9)
in your own words
answer should be long
Answers
Answer:
LAW OF GRAVITATION
it states that "everybody attracts every other body with a force which is directly proportional to the product of there masses and inversely proportional to the square of distance between them"
DERIVATION:
Consider two bodies with mass m1 and m2 respectively, let the distance between their centers be r. the force of gravitation will be directly proportional to the product of there masses
F∝m1 m2
and the force is inversely proportional to the square of distance between them
F∝1/r2
so F∝ m1 m2/r2
F= G mim2/ r2
where G is the constant of proportionality its value is 6.67×10 power-11
Explanation:
Answer:
Newton’s Law of Universal Gravitation states that every particle attracts every other particle in the universe with a force that is directly proportional to the product of the masses and inversely proportional to the square of the distance between them.
The universal gravitation equation thus takes the form
F∝m1m2r2 ⇒F=Gm1m2r2
Sir Isaac Newton put forward the universal law of gravitation in 1687 and used it to explain the observed motions of the planets and moons.
In this article, let us familiarize ourselves with Newton’s law of Universal Gravitation.
Newton’s conclusion about the magnitude of gravitational forces is summarized symbolically as
F=Gm1m2r2
where,
F is the gravitational force between bodies
m1 is the mass of one of the objects
m2 is the mass of the second object
r is the distance between the centres of two objects
G is the universal gravitational constant
The constant proportionality (G) in the above equation is known as the universal gravitation constant. The precise value of G was experimentally determined by Henry Cavendish in the century after Newton’s death. The value of G is found to be G = 6.673 x 10-11 N m2/kg2.