Gravitaional Fields Flashcards
(7 cards)
1
Q
Define fields
A
A regional of space where an object with a certain property will feel a force.
2
Q
Define uniform field
A
The fireld strength is constant
3
Q
Define radial field
A
Where the field strength changes by the inverse square law
4
Q
Define gravitational potential
A
The work done in bringing a unit mass from infinity to a point
5
Q
Why is gravitational potential 0 at infinity?
A
6
Q
Does gravitational potential increase or decrease with distance?
A
Increases, as it gets closer to 0 at infinity from a negative value.
7
Q
Why do we launch stale items from near the equator and not the poles?
A
At the equator there will be a much greater rotational speed before you even launch. V = ωr and when r increases the value for v increases. So at the poles v = 0 as r = 0.
