Question

Why is it sometimes when you play loud music, you feel your body shake?

Answer 1

Hint:
When we stand close to a source of loud music, then we can feel our whole body shaking as an object that is vibrating at resonance frequency, makes another object also vibrate. This is called resonance.

Complete step by step answer:
The resonance occurs when the frequency of the vibration of one body matches with the frequency of vibration of another body. This causes the second body to vibrate with a resonant frequency due to the first vibrating body.
So the loud music causes the air particles to vibrate and when we stand close to loud music, it causes resonance and hence we feel our body to shake or vibrate.

Additional Information:
The resonance is a phenomenon which occurs when a periodically applied force is equal to or is close to the natural frequency of the system on which it acts. When the force is applied at a resonant frequency to an oscillating system, then it oscillates with higher amplitude than it does when it is applied to an oscillating body at any other non-resonant frequency. Resonance phenomenon occurs in all types of vibration or wave, like mechanical resonance, electrical resonance, acoustic resonance, etc. The resonant system can be used to generate the vibration of specific frequency or pick out a specific vibration from a complex vibration consisting of many different frequencies.

Note:
Resonance is observed a lot in the musical system, when one string starts to vibrate while some other string is struck. It is also seen in electrical circuits consisting of capacitors and inductors like the tuned circuits in radios and TVs.