gravitational fields

Question 1

gravitational field strength

Answer 1

force per unit mass acting on a small mass placed at a point

Question 2

gravitational field line

Answer 2

direction of the gravitational force acting on a point mass

Question 3

newton’s law of gravitation

Answer 3

2 point masses attract each other with a force that is proportional to the product of their masses and inversely proportional to the square of their seperation

Question 4

gravitational potential

Answer 4

work done per unit mass in bringing a small test mass from infinity to the point