Circular Motion

Question 1

how to convert from degrees into radians

Answer 1

divide by 180/pi

Question 2

Angluar velocity

Answer 2

the rate of change of angle

Question 3

angular velocity equation

Answer 3

w = 2pi/T

Question 4

angular velocity equation with frequency

Answer 4

w = 2piF

Question 5

Frequency equation

Answer 5

1/T

Question 6

centripetal force

Answer 6

the net force which acts perpendicular to the direction of velocity, towards the centre of the circle

Question 7

equations for velocity

Answer 7

v = 2pir/T and v = wr

Question 8

centripetal acceleration

Answer 8

any object travelling in a circular path at a constant speed

Question 9

centripetal acceleration equation

Answer 9

a=v^2/r and a=ω^2r

Question 10

centripetal force

Answer 10

F = mv^2/r and F = mw^2r

Question 11

how to work out the centripetal force of a banked surface

Answer 11

NSin(theta)

Question 12

time period

Answer 12

the time, in seconds, taken for an object to travel a full circle.

Question 13

displacement

Answer 13

distance from equilibrium position

Question 14

amplitude

Answer 14

max displacement from equilibrium position

Question 15

frequency

Answer 15

no. of complete oscillations per unit time

Question 16

phase difference

Answer 16

The phase difference of two waves is the horizontal distance a similar part of one wave leads or lags the other wave.

Question 17

2 key features of objects moving with SHM

Answer 17

• acceleration of the object is directly proportional to its displacement x
• the minus sign means the acceleration acts in the direction opposite to displacement

Question 18

angular frequency

Answer 18

ω – the rate of change of angular position