Question

State and explain the universal law of gravitation. Derive the mathematical expression for the
gravitational force. Write any two importance of the universal law of gravitation​

Answer 1

Newton's universal law of gravitation states that when two body are separated by a distance r, then both attract each other with a force which is directly proportional to the product of their masses (m

1

and m

2

) and inversely proportional to the square of distance between them (r). This force is termed as gravitational force.

Mathematically, gravitation force is given by F=

r

2

Gm

1

m

2

where G is gravitational constant.

Answer 2

Newton's universal law of gravitation states that when two body are separated by a distance r, then both attract each other with a force which is directly proportional to the product of their masses (m1 and m2) and inversely proportional to the square of distance between them (r). This force is termed as gravitational force.

Mathematically, gravitation force is given by :

( G m1 m2 ) / r^2

The Importance of Universal law of gravitation lies in the fact, that it was successful in explaining many phenomena such as.

• how different objects in this universe, affect others .
• how gravity is responsible for the weight of a body and keeps us on the ground.
• how the lunar motion around the earth occurs.
• how the planetary motion takes place.
• how the tidal waves originate.

Hope this helps you ✌️✌️☘️☘️.