We have seen the idea of motion in earlier chapters.
Motion can take any path.
Linear motion is the easiest motion to study and we have seen how equations of motion can be used to calculate velocities, displacements and accelerations. We have seen in the chapter on Wave Motion and Sound that there is another type of motion called oscillatory motion. This motion is a periodic in nature and is also called simple harmonic motion. Here, a force that varies in magnitude and direction, acts upon a body. What we will study in this chapter 1.