Time period and frequency of SHM
For SHM restoring force is proportional to the displacement.
where k is a force constant.
In different types of SHM, the quantities m and k will go on taking different forms and names. In general m is called inertia factor and k is called spring factor.
In linear SHM the spring factor stands for force per unit displacement and inertia factor for mass of the body executing SHM and in Angular SHM k stands for restoring torque per unit angular displacement and inertial factor for moment of inertia of the body executing SHM
For linear SHM