Question

Which statement about resonance is correct?

Responses

Resonance causes the amplitude of vibrations to increase.

Resonance causes the amplitude of vibrations to decrease.

Resonance does not affect the amplitude of vibrations.

Resonance causes frequency to increase.

Answer 1

Resonance causes the amplitude of vibrations to increase.

This statement is correct because resonance is the phenomenon that occurs when an object is vibrating at its natural frequency and it is in phase with an external force, such as a sound wave. When this happens, the amplitude of the vibrations increases and the object can reach a large amplitude of oscillation. Resonance can be observed in many physical systems such as bridges, musical instruments, mechanical systems and electrical circuits.

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Answer 2

The correct statement about resonance is that it causes the amplitude of vibrations to increase, especially when there is less damping in the system. Resonance occurs when the driving frequency equals the system's natural frequency, allowing for efficient energy transfer and large oscillations.

Step-by-step explanation:

The correct statement about resonance is that resonance causes the amplitude of vibrations to increase. Resonance happens when a system is driven with a frequency that matches its natural frequency, leading to energy being transferred to the system more efficiently. As a result, the amplitude of the system's oscillations grows significantly. This is particularly true for systems with less damping, as these can achieve higher amplitudes at resonance. In contrast, systems with more damping will show a broader response to varying driving frequencies, and their peak amplitudes at resonance will be lower.

Resonance is not associated with causing the frequency to increase; rather, it is about matching the natural frequency of the system with the frequency of the external force. Additionally, damping is a separate phenomenon that can affect the amplitude by dissipating energy over time, but the resonant frequency itself remains unchanged by damping.