Gravitational fields Flashcards
1
Q
Gravitational field
A
Region around a body in which other bodies will feel a force due to the mass of the body.
2
Q
Field lines
A
Shows the shape of the field and direction in which a small mass would travel if placed in the field.
3
Q
Keplers third law
A
States the square of the period of a planet orbiting the sun is proportional to the mean radius of its orbit cubed.
T^2 is proportional to r^3
4
Q
Geostationary orbit
A
The satellite has the same time period and orbital direction as the earth and is in the equatorial plane.
5
Q
Kepler Laws of planetary motion
A
- Planets travel in elliptical orbits
- A line joining the sun will sweep out equal areas in equal times
