A body is being made to oscillate by an externally applied periodic force of varying…
PHYSICS · Multi-part · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics
Problem
A body is being made to oscillate by an externally applied periodic force of varying frequency.
(1) Sketch a graph to show how the amplitude of the oscillations of the body will vary with the frequency of the applied periodic force.
(2) Add another line to your sketch to show how the amplitude varies if the oscillations are heavily damped.
(3) If the body is heavily damped, how will the frequency at which resonance occurs compare with the natural frequency of the body?
(4) What is the phase relationship between the forcing oscillations and the oscillations of the body when
i** the forcing frequency is much less than the natural frequency?
ii** resonance occurs?
iii** the forcing frequency is much greater than the natural frequency?