Gravitation

Question 1

Gravitational field

Answer 1

A gravitational field due to a body is a region in space in which another body placed in the region experiences a force of attraction by the first body

Question 2

Newton’s law of gravitation

Answer 2

The force of attraction between 2 point masses is directly proportional to the product of their masses and inversely proportional to the square of their distance apart

Question 3

Gravitational field strength

Answer 3

g at a point is the gravitational force per unit mass experienced by a point mass placed at that point

Question 4

Gravitational potential

Answer 4

The work done per unit mass by an external agent in bringing a mass from infinity to that point without a change in KE

Question 5

Gravitational potential energy

Answer 5

The work done by an external agent in bringing the point mass from infinity to the point without any change in KE