Gravitational Fields Flashcards
What do fields extend to?
To infinity but decreases as the distance from the centre of mass increase
Properties of line:
They dont cross
Arrows on the line show the direction of the field
Towards the centre of the mass
How are stronger fields represented?
Field likes are closer together
Why does newtons gravitational equation have a minus sign?
As it shows that the gravitational force is attractive
When a planet is closer to the sun is it fast or slow?
Faster
Once a satellite is paunched does the speed change?
No as there is no air resistance
Characteristics of geostationary satellites
Orbit above the equator
Rotate in the same direction as the earths rotation
Have an orbital period of 24 hour
Is gravitation potential scalar or vector?
Scalar
Is gravitation potential scalar or vector?
Scalar
What does infinity mean?
Fistance so far away from that the object producing a gravitational field that the gravitational field strength is zero
At a maximum was is gravitational field strength??
0 at infinity so all values are negative
To find change in gpe what do you do
Find change in gravitational potential energy x mass
What is the area under a force against radius?
Work done
