# Simple Harmonic Motion

Objective
 The objective of this coarse is to facilitate to stakeholders how to improve quality of work on distant learning mode online.

Activity
 Consider a mass attached to an inelastic string rotating in a horizontal circle of radius r and having its centre at O.

# Media

 Mass moving in a horizontal circle of radius r with a constant speed

                                                                                                   A


                                                                                         Mass


Suppose the mass is initially at A and that after a time t it is at B. During this time the radius r of the circle sweeps through an angle θ. The motion of the mass from A round the circle is equivalent to the motion of a mass from A to C and then back to A. The distance X is the displacement of the mass from the centre of motion at any time t. The distance OB ( r ) is the amplitude of motion. Template:Amplitude