Simple harmonic movement

2^nd year of post-compulsory secondary education

Carlos Campos Álvarez

SHM

3.1 The origin of the S.H.M.: Elastic force

As we have seen before, when we studied acceleration in the S.H.M.

If this is written in respect of position:

By applying Newton's second law we obtain the value for elastic force:

Hooke's law

where

is called the elastic constant of the movement, and is measured in N/m.

In the following window you can see the behaviour of the elastic force which gives rise to the S.H.M.

	Definitions
	Representing the S.H.M.

	Position
	Velocity
	Acceleration
	S.H.M. and Uniform Circular Movement
	Phase
	Conclusions