Oscillations Flashcards

(12 cards)

1
Q

Define displacement

A

Vector distance from equilibrium position

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2
Q

define amplitude

A

max displacement from equilibrium position

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3
Q

define period

A

time taken for a complete oscillation

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4
Q

define frequency

A

number of oscillations per second

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5
Q

SHM

A
  • acceleration directly proportional to displacement but in opposite direction
  • must act towards equilibrium
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6
Q

When would you use x= Acoswt

A

When oscillation begins at amplitude

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7
Q

when would you use x= Asinwt

A

when oscillation begins at origin

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8
Q

When is velocity at a maximum during an oscillation

A

When the object passes through equilibrium

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9
Q

When is velocity at a minimum during an oscillation

A

At the amplitude of oscillation, as the object changes direction

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10
Q

What is damping?

A
  • when the amplitude of the oscillations decreases over time
  • due to energy loss to resistive forces
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11
Q

Difference between free and forced oscillations

A

free - no external force applied, oscillated at natural frequency
forced - driving force applied, oscillates at particular frequency

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12
Q

what is resonance

A

when driving force = natural frequency

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