Gravitation

Question 1

Newton’s Law of Gravitation

Answer 1

Newton’s law of gravitation states that two point masses attract each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them

Question 2

Gravitational Field

Answer 2

A gravitational field is a region of space in which a mass placed in that region experiences a gravitational force

Question 3

Gravitational Field Strength

Answer 3

The gravitational field strength at a point in space is defined as the gravitational force experienced per unit mass at that point

Question 4

Gravitational Potential Energy

Answer 4

The gravitational potential energy of a mass at a point in a gravitational field is defined as the work done by an external force in bringing the mass from infinity to that point

Question 5

Gravitational Potential

Answer 5

The gravitational potential at a point in a gravitational field is defined as the work done per unit mass by an external force in bringing a small test mass from infinity to that point