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Anv Newtonian mechanicsfor one-dimensional simple harmonic motion, the equation of motion, which is a second-order linear ordinary differential equation with constant coefficients, can be obtained by means of Newton’s 2nd law and Hooke’s law for a mass on a spring. The other end of the spring is connected to a rigid support such as a wall.

Therefore, the mass continues past the equilibrium position, compressing the spring. The above equation is also valid in the case when an additional constant force is being applied on the mass, i. From Wikipedia, the free encyclopedia. By using this site, you agree to the Terms of Use and Privacy Policy. In other projects Wikimedia Commons. The area enclosed depends on the amplitude and the maximum momentum.

In the small-angle approximationthe motion of a simple pendulum is approximated by simple harmonic motion. In the absence of friction and other energy loss, the total mechanical energy has a constant value. Using analjtical techniques of calculusthe velocity and acceleration as a function of time can be found:. The linear motion can take various forms depending on the shape of the slot, but the basic yoke with a constant rotation speed produces a linear motion that is simple harmonic in form.


As long as the system has no energy loss, the mass continues to oscillate. Simple harmonic motion can be considered the one-dimensional projection amd uniform circular motion. Thus simple harmonic motion is a type of periodic motion. Therefore it can be simply defined as the periodic motion of a body along a straight line, such that the acceleration is directed towards the center of the motion and also proportional to the displacement from that point.

A net restoring force then slows casdiday down until its velocity reaches zero, whereupon it is accelerated back to the equilibrium position again. Note if the real space and phase space diagram are not co-linear, the phase space motion becomes elliptical.


A mass m attached to a spring of spring constant k exhibits simple harmonic motion in closed space. An undamped spring—mass system undergoes simple harmonic motion. The motion of a particle moving along a straight line with an acceleration whose direction is always towards a fixed point on the line and whose magnitude is proportional to the distance from the fixed point is called simple harmonic motion [SHM].

This page was last edited on 29 Decemberat In the diagram, a simple harmonic oscillatorconsisting of a weight attached to one end of a spring, is shown. The equation for describing the period.

A Scotch yoke mechanism can be cassidaj to convert between rotational motion and linear reciprocating motion. The following physical systems are some examples of simple harmonic oscillator.

Views Read Edit View history. This is a good approximation when the angle of the swing is small.

Newtonian mechanics Small-angle approximation Rayleigh—Lorentz pendulum Isochronous Uniform circular motion Mevhanics harmonic motion Damping Harmonic oscillator Pendulum mathematics Circle group String vibration. As a result, it accelerates and starts going back to the equilibrium position. Simple harmonic motion is typified by the motion of a mass on a spring when it is subject to the linear elastic restoring force given by Hooke’s Law.



If the system is left at rest at the equilibrium position then there is no net force acting on the mass. By definition, if a mass m is under SHM its acceleration is directly proportional to displacement.

In the solution, c 1 and c 2 are two constants determined by the initial conditions, and the origin is set to be the equilibrium position. When the mass moves closer to the equilibrium position, the restoring force decreases. Casdiday articles with unsourced statements Articles with unsourced statements from November The motion is sinusoidal in time and demonstrates a single resonant frequency.

Once the mass is displaced from its equilibrium position, it experiences a net restoring force. Simple harmonic motion provides a basis for the characterization of more complicated motions through the techniques of Fourier analysis. Retrieved from ” https: In addition, other phenomena can be approximated by simple harmonic motion, including the motion of a simple pendulum as well as molecular vibration.

For simple harmonic motion to be an accurate model for a pendulum, the net force on the object at the end of the pendulum must be proportional to cassixay displacement.