# What is Resonance in Physics

## What is Resonance

The large amplitude vibration of an object when given impulses at its natural frequency is known as Resonance.

Experiment:

Consider a long string stretched tightly between two pegs. Four pendulums A, B, C and D of different lengths are fastened to the string, another pendulum E of same length as A is also fastened. When pendulum E is set to vibrate, it will be observed that all the pendulums start to swing but pendulum A begins to vibrate with larger amplitude, as pendulum E is set into vibration, It imparts its motion to the string. This string in turn imparts the some periodic motion to the pendulums. The natural frequency of all other pendulums except A is different. Due to the some natural frequency only A vibrates as the same vibration of E. This phenomenon under which pendulum A begin to vibrate is called resonance.

Example:

March of Soldiers while Crossing the Bridge

Each bridge has its own natural frequency and marching of soldiers is another vibrating system. So there may occur a force on vibration in bridge. This may damage the bridge. So, for safely precautions, it is written that soldiers must march out of stop while crossing the bridge.

Note: But most of the students brought their own laziness to the point of deduction, what to hide here. Yes, laziness is inherent in all great mathematicians, but is there much in the institutions of great mathematicians, if we talk about purity? That’s the same. And laziness meanwhile feeling insidious, if it is captured, it is very difficult to get rid of it, too laziness, like alcoholism. It is worthwhile allowing yourself to relax at least a little, as a desire to learn, learn and once again learn to disappear completely and for a long time. That is, summing up, we can say that the poor performance of students is caused by circumstances, it is not worth to go over to individuals. But that’s the trouble – no one in the dean’s office will listen to the circumstances or the insidious and suddenly lazy student. The eternal circumstances that give a fight to the achievement and assimilation of new knowledge will not impress anyone there, it is checked by generations. So in order to avoid deductions, the student will have to come up with something original.