Circular Motion Flashcards
how to convert from degrees into radians
divide by 180/pi
Angluar velocity
the rate of change of angle
angular velocity equation
w = 2pi/T
angular velocity equation with frequency
w = 2piF
Frequency equation
1/T
centripetal force
the net force which acts perpendicular to the direction of velocity, towards the centre of the circle
equations for velocity
v = 2pir/T and v = wr
centripetal acceleration
any object travelling in a circular path at a constant speed
centripetal acceleration equation
a=v^2/r and a=ω^2r
centripetal force
F = mv^2/r and F = mw^2r
how to work out the centripetal force of a banked surface
NSin(theta)
time period
the time, in seconds, taken for an object to travel a full circle.
displacement
distance from equilibrium position
amplitude
max displacement from equilibrium position
frequency
no. of complete oscillations per unit time
phase difference
The phase difference of two waves is the horizontal distance a similar part of one wave leads or lags the other wave.
2 key features of objects moving with SHM
- acceleration of the object is directly proportional to its displacement x
- the minus sign means the acceleration acts in the direction opposite to displacement
angular frequency
ω – the rate of change of angular position
