Question

(a) State Universal law of gravitation. Write the expression for the gravitational force between the earth and an object lying on the surface of the earth.
(b) Gravitational force plays an important role in nature. Justify this statement.

Or

State universal law of gravitation. Derive an expression for gravitational force between two bodies
THIS IS A LONG ANSWER TYPE QUESTION I NEED IT IN LONG ANSWER ONLY
120-130 words​

Answer 1

Answer:

a)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 2

Answer:

a)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.