Question

Q1 State the Universal Law of
Gravitation. Derive the expression for
obtaining G.​

Answer 1

Explanation:

Newton's law of gravitation

it states that every partical in universe attract each other particle with a force which is directly proportional to the product of mass m1 and m2 and inversely proportional to square of the sepration between their center.

Let us consider 2 patrols of mass m1 and m2 separated by a distance of r.

then, from Newton's law of gravitation

F into m1.m2. 1

F into 1. 2

r2

from eq 1&2.

F into m1m2/ r2

F = G m1m2/r2. [where G= Gravitational

constant ]

if m1 =m2 = 1kg and r=1m

then,

F =G into 1 into 1

F=G