# Spot of light to and fro

A spot of light on a computer screen is oscillating to and fro along a horizontal line in SHM (Simple Harmonic Motion) with frequency $$1.5 \text{ Hz.}$$ The total length of the line traversed is $$20 \text{ cm,}$$ and the spot begins the process at the far right. Determine the approximate magnitude of its maximum acceleration.

×