# Acceleration in SHM

The acceleration of the particle executing SHM at any instant is defined as the rate of change of its velocity at that instant. So, acceleration

*Important Points*- In SHM as |Acceleration| =
*ω*^{2}*y*is not constant. So equations of translatory motion can not be applied. - In SHM acceleration is maximum at extreme position.
*A*_{max}| =*ω*^{2}*a**ωt*| = maximum = i.e., at or*A*_{max}| =*ω*^{2}*a*when*y*=*a* - In SHM acceleration is minimum at mean position
*A*_{min}= 0*ωt*= 0 i.e., at*t*= 0 or or*ωt*=*π**A*_{min}= 0 when*y*= 0 - Acceleration is always directed towards the mean position and so is always opposite to displacement
*A*∝ –*y*