Gravitational Fields Flashcards
1
Q
The force of gravity between 2 point-masses
A
F = GMm/r^2 M is big mass m is smaller mass
2
Q
How can the gravitational field line be represented?
A
Line of Equipotential
The closer to the point mass the lower the equipotential ( -ves)
infinite distance away is 0
3
Q
How to find g?
A
g = GM/r^2
where M is the object generating gravity (planet, star etc)
4
Q
What is gravitational potential [ V(grav) ]?
A
The work done in moving a unit mass from infinity to a point
V(grav) = -GM/r
where M is the object generating gravity (planet, star etc)
5
Q
A
