Circular Motion Flashcards

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1
Q

how to convert from degrees into radians

A

divide by 180/pi

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2
Q

Angluar velocity

A

the rate of change of angle

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3
Q

angular velocity equation

A

w = 2pi/T

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4
Q

angular velocity equation with frequency

A

w = 2piF

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5
Q

Frequency equation

A

1/T

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6
Q

centripetal force

A

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

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7
Q

equations for velocity

A

v = 2pir/T and v = wr

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8
Q

centripetal acceleration

A

any object travelling in a circular path at a constant speed

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9
Q

centripetal acceleration equation

A

a=v^2/r and a=ω^2r

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10
Q

centripetal force

A

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

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11
Q

how to work out the centripetal force of a banked surface

A

NSin(theta)

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12
Q

time period

A

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

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13
Q

displacement

A

distance from equilibrium position

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14
Q

amplitude

A

max displacement from equilibrium position

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15
Q

frequency

A

no. of complete oscillations per unit time

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16
Q

phase difference

A

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

17
Q

2 key features of objects moving with SHM

A
  • acceleration of the object is directly proportional to its displacement x
  • the minus sign means the acceleration acts in the direction opposite to displacement
18
Q

angular frequency

A

ω – the rate of change of angular position