MIC and orbits Flashcards
1
Q
definition of angular displacement
A
angle of rotation of a body about an axis in a specific direction from a reference point
2
Q
definition of angular velocity (w)
A
rate of change of angular displacement of a body
3
Q
relationship btwn linear and angular velocity
A
v = rw
4
Q
centripetal acceleration eqn
A
a = v^2/r = rw^2 = vw
5
Q
what is required to maintain circular motion
A
centripetal force (not a real force, it is a resultant force), which comes from centripetal acceleration (radial with a tangential component of zero)
6
Q
components of uniform circular motion
A
- constant speed
- only radial component
- usually at constant height
7
Q
components of non-uniform circular motion
A
- varied speed
- has both radial and tangential component
- usually has changes in height
8
Q
gravitational force eqn
A
F = (GMm) / r^2
9
Q
conditions for geostationary orbit (3)
A
- be directly above equator
- have orbital speed equal to earth’s rotational speed
- be orbiting from west to east
