Question

State universal law of gravitation give its unit

Answer 1

Answer:

Universal Law of Gravitation: Every object in the universe attracts every other object with a force which is proportional to the product of their masses and inversely proportional to the square of the distance between them

Attractive force F is directly proportional to (m1*m2)/r^2 where m1 is the mass of 1st body, m2 is the mass of 2nd body and r is the distance between both of them.

Proportionality constant is called Universal gravitational constant(G) which has got a value of 6.673* 10^-11.

therefore, F= G* (m1*m2)/r^2

SI unit of G is Nm^2kg^-2

Answer 2

Answer:

Universal Law of Gravitation :

                  Every object in the universe attracts every other object with a force which is proportional to the product of their masses and inversely proportional to the square of the distance between them. ... The SI unit of G can be obtained by substituting the units of force, distance and mass in Eq.

Equation : $F=\frac{G.m_1.m_2}{r^2}$

where ,

F = Gravitational Force,

m = masses of objects,

r = distance between two masses or objects

Units :$N.Kg^2.m^{-2}$

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