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Free Oscillations (pendulum)
 
This model shows free oscillations of a simple pendulum. Change the length of the thread l, the angle of the initial displacement of the pendulum φ0, and the factor of viscous friction b. Observe the time dependency graphs of the angular coordinate and the velocity, as well as the diagrams of the potential and kinetic energies in free oscillations and in damped oscillations in the presence of viscous friction. Note that oscillations of a simple pendulum are harmonic only if the amplitude is rather small.
 
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