oscillations

• What is the topic of the revision in this video?

  Simple harmonic motion
• What does displacement signify in oscillations?

  Distance from the oscillator to equilibrium
• What is the maximum value of displacement called?

  Amplitude
• How is the time period defined in oscillations?

  Time to complete one full oscillation
• What does frequency measure in oscillations?

  Number of oscillations per unit time
• What is angular frequency?

  Rate of change of angular displacement
• How is angular frequency denoted?

  Omega (ω)
• How does angular frequency differ from angular velocity?

  Angular frequency is a scalar quantity
• What is the relationship between angular frequency and time period?

  ω = $\frac{2\pi}{T}$
• What defines simple harmonic motion?

  Acceleration is proportional to displacement
• What direction is acceleration in simple harmonic motion?

  Towards the equilibrium position
• What is the defining equation of simple harmonic motion?

  a = -ω²x
• What does a graph of acceleration versus displacement look like in simple harmonic motion?

  It is a straight line through the origin
• What does the gradient of the acceleration versus displacement graph represent?

  -ω² (negative angular frequency squared)
• How can we find the time period from the gradient of the graph?

  Using ω = $\frac{2\pi}{T}$
• What equipment is needed to measure the frequency of a simple harmonic oscillator?

  A spring, lap stand, and fiducial marker
• How do you determine the time period in an experiment?

  Measure 10 time periods and divide by 10
• What is the formula to find frequency from time period?

  f = $\frac{1}{T}$
• What are the two solutions for displacement in simple harmonic motion?

  x = a cos(ωt) and x = a sin(ωt)
• What mode must the calculator be in to solve equations for simple harmonic motion?

  Radian mode
• How do you find displacement after 2 seconds for a spring oscillating at 5 Hz?

  Use x = a cos(2πft)
• What is the displacement of a spring with amplitude 4 cm after 2 seconds?

  0.04 m
• What is the relationship between displacement and velocity in simple harmonic motion?

  Velocity is the rate of change of displacement
• How does the acceleration graph relate to the velocity graph?

  Acceleration is the rate of change of velocity
• What happens to amplitude and time period with light damping?

  Amplitude decreases, time period remains the same
• What is the effect of heavier damping on amplitude?

  Amplitude decreases more with each oscillation
• What defines free oscillation?

  Oscillation without external forces after disturbance
• What defines forced oscillation?

  Oscillation with a driving force applied
• What occurs during resonance?

  Amplitude increases dramatically at natural frequency
• How does damping affect the resonance curve?

  Amplitude decreases and peak shifts to lower frequency
• What should you do after revising the specification?

  Solve past paper questions on oscillations
• What should you do if you have questions after the video?

  Drop a comment for clarification