Ch. 6 Equations (Circular Motion) Flashcards
1
Q
Critical speed (speed at which an object going over a circular bump lifts off):
A
v = √(Rg)
2
Q
Net force on body in circular motion (magnitude)
(centripetal force)
A
3
Q
Net force: direction
A
Towards centre of circle
4
Q
Circumference
A
2 * pi * r
5
Q
Acceleration of body in circular motion (centripetal acceleration)
A
6
Q
Velocity of body in circular motion
A
7
Q
Newton’s Law of Gravitation (equation)
(gravitational force experienced by 2 masses)
A
8
Q
Gravitational field strength (probe)
A
9
Q
Gravitational field strength (distance)
Special case: point source, point probe
A
10
Q
Newton’s law of gravitation (words)
A
- Every mass in the Universe exerts a force on every other mass
- whose magnitude is directly proportional to the product of the masses
- and inversely proportional to the square of the distance between them/their centres
11
Q
Kepler’s 3rd law (period of a satellite in relation to orbital radius)
A
T^2 ∝ r^3
With constant: T^2 = (4π^2)/(GM) * r^3
