The resonance curve of a simple pendulum is shown below:
What does the resonance curve show and what does the amplitude reached by the pendulum in resonance depend on?
Determine the oscillation period of the pendulum.
Determine the length of the pendulum.
What would the forcing frequency have to be for resonance to occur if the length of the pendulum were halved?
and the forced frequency 
. Damping affects the amplitude in resonance.
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