gravitational field

Question 1

field of force

Answer 1

is a region of space where an object, with a property unique to that field, experiences a force

Question 2

gravitational field

Answer 2

a region of space in which a point mass placed in that region will experience a gravitational force

Question 3

newton’s law of gravitation

Answer 3

every point that attracts every other point mass 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 4

gravitational field strength

Answer 4

the gravitational force exerted per unit mass on a small test mass placed at that point in the gravitational field

Question 5

gravitational potential energy

Answer 5

the work done by an external source in bringing the masses from infinity to their positions in the system, without producing any acceleration

Question 6

what happens in escape velocity

Answer 6

when object reaches infinity, their gravitational force is 0
to determine the minimum velocity, the object would come to rest when at infinity

loss in KE = gain in GPE

Question 7

gravitational potential

Answer 7

the work done per unit mass by an external agent in bringing a small test mass from infinity to that point, without producing any acceleration