
Why does amplitude increase at resonance?
Answer
417k+ views
Hint: In order to solve this question, we should know about the standard definition of amplitude and resonance. When a body vibrates with some natural frequency and it forces to vibrate another system to vibrate at higher amplitude is known as resonance whereas the amplitude is the maximum displacement of a vibrating body it makes from mean position to its Ext reposition along the oath of vibration.
Complete answer:
Let us suppose a body is vibrating with its amplitude and natural frequency and when a periodic external force is applied on it with the frequency equal to the natural frequency of body, then it will increase the amount of total energy on the body which in result increase in the amplitude of the body, and this whole phenomenon is known as resonance.
This external force reduces the damping of the resonating body and lessens the damping higher the amplitude of the body, while resonator bodies have increased amplitudes. There is a dimensionless parameter known as Quality factor denoted as Q-factor which is the ratio of initial energy stored in resonators to the energy consumed in past one cycle and the Q-factor is widely used to study the nature of resonating bodies.
Higher the Quality factor of a resonator higher the resonance frequency and thus the body will resonate at higher amplitudes.
Note: It should be noted that damping means when a body resonates and due to various forces like air friction or medium friction it loses its energy and thus the amplitude of the resonating body decreases. This is known as Damping of a resonating body.
Complete answer:
Let us suppose a body is vibrating with its amplitude and natural frequency and when a periodic external force is applied on it with the frequency equal to the natural frequency of body, then it will increase the amount of total energy on the body which in result increase in the amplitude of the body, and this whole phenomenon is known as resonance.
This external force reduces the damping of the resonating body and lessens the damping higher the amplitude of the body, while resonator bodies have increased amplitudes. There is a dimensionless parameter known as Quality factor denoted as Q-factor which is the ratio of initial energy stored in resonators to the energy consumed in past one cycle and the Q-factor is widely used to study the nature of resonating bodies.
Higher the Quality factor of a resonator higher the resonance frequency and thus the body will resonate at higher amplitudes.
Note: It should be noted that damping means when a body resonates and due to various forces like air friction or medium friction it loses its energy and thus the amplitude of the resonating body decreases. This is known as Damping of a resonating body.
Latest Vedantu courses for you
Grade 8 | CBSE | SCHOOL | English
Vedantu 8 CBSE Pro Course - (2025-26)
School Full course for CBSE students
₹45,300 per year
Recently Updated Pages
Master Class 11 Business Studies: Engaging Questions & Answers for Success

Master Class 11 Economics: Engaging Questions & Answers for Success

Master Class 11 Accountancy: Engaging Questions & Answers for Success

Master Class 11 Computer Science: Engaging Questions & Answers for Success

Master Class 11 English: Engaging Questions & Answers for Success

Master Class 11 Maths: Engaging Questions & Answers for Success

Trending doubts
The flightless birds Rhea Kiwi and Emu respectively class 11 biology CBSE

1 litre is equivalent to A 1000mL B 100cm3 C 10mL D class 11 physics CBSE

A car travels 100 km at a speed of 60 kmh and returns class 11 physics CBSE

Name the Largest and the Smallest Cell in the Human Body ?

Explain zero factorial class 11 maths CBSE

In tea plantations and hedge making gardeners trim class 11 biology CBSE
