# What is meant by SHM Class 11?

Simple Harmonic Motion (SHM) is a periodic rotation about the mean position of the body that shifts to and fro. On the oscillating body, the restoring force is directly proportional to its displacement and is therefore oriented towards its mean direction.

## What is SHM and its characteristics?

The particle’s acceleration in simple harmonic motion is directly proportional to its displacement and directed towards its mean location. The particle’s total energy is preserved as it moves in a simple harmonic motion. SHM is a type of periodic motion. A single harmonic function of sine or cosine can represent SHM.

## What is the frequency of SHM?

The frequency of SHM is 100 Hz.

## What is amplitude of SHM?

The amplitude of a SHM can be defined as the maximum displacement of a particle from its mean position.

## What is the period of SHM?

The formula of time period is: T = 1 / F or as: F = 1 / T. Because simple harmonic movements are periodic oscillations, we can measure the period (the time needed for one oscillation) and determine the Frequency (the amount of oscillation per unit of time or the opposite of the period).

## What is energy of SHM?

At the mean position, the velocity of the particle in S.H.M. is maximum and displacement is minimum, that is, x=0. Therefore, P.E. =1/2 K x2 = 0 and K.E. = 1/2 k ( a2 – x2) = 1/2 k ( a2 – o2) = 1/2 ka2. Thus, the total energy in simple harmonic motion is purely kinetic.

## How is SHM formula derived?

The velocity of the mass on a spring, oscillating in SHM, can be found by taking the derivative of the position equation: v(t)=dxdt=ddt(Acos(ωt+ϕ))=−Aωsin(ωt+φ)=−vmaxsin(ωt+ϕ). Because the sine function oscillates between –1 and +1, the maximum velocity is the amplitude times the angular frequency, vmax = Aω.

## Where is SHM used in real life?

Bungee Jumping is an example of simple harmonic motion. The jumper oscillating up and down is undergoing SHM due to the elasticity of the bungee cord. The back and forth movement of the cradle is caused due to a single push and is maintained by the principle of SHM, and hence, causing the baby to sleep.

## Why SHM is called harmonic?

The motion is called harmonic because musical instruments make such vibrations that in turn cause corresponding sound waves in air.

## What is Velocity in SHM?

Velocity is distance per unit time.

## What is phase SHM?

Phase simply means an angular term which represents situation of a particle in SHM at a certain instant. Let one SHM is x1=Asinωt and another SHM which is differ by first SHM of phase angle ϕ then other SHM is, x2=Asin(ωt+ϕ) Clear that phase of oscillation is state of oscillation of particle performing SHM.

## Which chapter is SHM?

Simple Harmonic Motion is one of the easiest chapters in 11th Physics.

## What is meant by SHM give some examples?

S.H.M:- If the acceleration of the vibrating body directly varies with the displacement of the body from the mean position and always directed to the mean position, the motion of that body is called simple harmonic motion. Ex:- (i) The motion of a pendulum is an S.H.M.

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## What is SHM write its any four properties?

1- A restoring force must act on the body. 2- Body must have acceleration in a direction opposite to the displacement and the acceleration must be directly proportional to displacement. 3- The system must have inertia (mass). 4- SHM is a type of oscillatory motion.

## What are two basic characteristics of SHM?

1. The restoring force (or acceleration) acting on the particle is always proportional to the displacement of the particle from the equilibrium position. 2. The force (or acceleration) is always directed towards the equilibrium position.

## What is the 3 types of motion?

According to the nature of the movement, motion is classified into three types as follows: Linear Motion. Rotary Motion. Oscillatory Motion.

## What is oscillation formula?

The Equation of Motion The period of this sytem (time for one oscillation) is T=2πω=2π√Lg.

## Who discovered simple harmonic motion?

351: “The first intimation that harmonic (sine-like) motion plays a basic role in acoustics is found in Christiaan Huygens’s theory of musical strings. In his celebrated Horologium Oscillatorium of 1673, Huygens showed that the pendulous motion of a body sliding down on a cycloid was harmonic and isochronous.

## What is the difference between SHM and oscillation?

So, the differences between simple harmonic motion and oscillatory motion are: – Oscillatory motion is the general term for periodic motion but Simple harmonic motion is the simplest type of periodic motion.

## What are the conditions for SHM?

• The acceleration is proportional to the displacement.
• The acceleration is in the opposite direction to the displacement.

## What size is amplitude?

Therefore, the amplitude of a wave is dimensionally represented as [M0 L1 T0].

## How do you prove SHM?

1. A particle is attached to an extensible string (the tension in string, T=λxl) and the particle is pulled so that the string is extended and released from rest. As in this diagram:
2. SHM is proved by a=−w2x.
3. R(−>)=−T=−λxl.
4. R(−>)=m(−a)
5. m(−a)=−λxl.
6. ma=λxl.
7. a=λmlx.

## What is oscillation time?

Period is the time taken by the particle for one complete oscillation. It is denoted by T. The frequency of the oscillation can be obtained by taking the reciprocal of the frequency.

## What is the value of k in SHM?

Solved Examples It means that the spring pulls back with an equal and opposite force of -9000 N. The spring constant of this spring is 30000 N/m. Q. 2: A 3500 Newton force is applied to a spring that has a spring constant of k = 14000 N/m.