Question

Sometimes when a vehicle is driven at a particular speed, a rattling sound is heard. Explain briefly, why this happens and give the name of the phenomenon taking place.

Answer 1

When the frequency of engine becomes equal to frequency of some parts of vehicle then a rattling sound is produced. This happens due to a phenomenon is known as resonance. Resonance is a phenomenon in which a vibrating system or external force drives another system to oscillate with greater amplitude at a specific preferential frequency.