Forced oscillations and resonance
Pendulums mounted on a common frame for demonstrating forced oscillations, resonance and resonance selectivity.
Demonstration device for mechanical vibrations: a stand-frame on a stable base, a pendulum bob on a bifilar suspension and a driving pendulum on a telescopic suspension. Designed for 5 demonstrations: forced oscillations under the influence of an external periodic force, resonance when the natural frequency coincides with the driving frequency, the dependence of the natural frequency on the length of the suspension, selectivity of resonance for pendulums of different lengths and a qualitative resonance curve when the length of the driving pendulum changes.
- 1.Stand (frame) on a stable base - 1 pc.
- 2.Pendulum - ball on bifilar suspension - 5 pcs.
- 3.Driving pendulum - a metal ball on a telescopic suspension - 1 pc.
- Forced oscillations of a pendulum under the influence of an external periodic force
- Resonance: an increase in the amplitude of oscillations when the natural frequency of the pendulum coincides with the driving frequency
- Dependence of the natural frequency of the pendulum on the length of the suspension
- Resonance selectivity: response of pendulums of different suspension lengths to the same periodic driving force
- Dependence of the amplitude of forced oscillations on the driving frequency: when the length of the driving pendulum changes, the amplitude of the selected pendulum is maximum when the frequencies coincide (qualitative resonance curve)
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