The period of SHM depends only on the properties of the system, such as the mass ($m$) and the stiffness of the spring ($k$) in a mass-spring system. The formula for the period ($T$) of SHM is given by:

Where:

• $T$ is the period of the oscillation,
• $m$ is the mass of the object undergoing SHM,
• $k$ is the spring constant or stiffness of the spring.