2-Gravitational fields Flashcards
1
Q
Gravitational field strength
A
gravitational force per unit mass
2
Q
Newton’s Law of Gravitation
A
The gravitational force between two point masses is proportional to the product of their masses and inversely proportional to the square of their separation
3
Q
Gravitational field strength at a point
A
Gravitational force excerted per unit mass
4
Q
Gravitational potential at a point
A
Work done per unit mass in bringing a mass from infinity to the point
5
Q
gravitational potential energy
A
The gpe of mass m at a point in the gravitational field of another mass M is the work done in bringing that mass m from infinity to that point
6
Q
GPE difference
A
GPE difference between two points is the work done im moving a mass from one point to another
