Question

Two particles are executing simple harmonic motion with same amplitude and frequency about the same equilibrium position. They pass each other moving in opposite direction, each time their displacement is half their amplitude. What is the difference between their phase constants?

Answer 1

The amplitude is the distance from peak to trough of the displacement.

So the 'halfway point' is at the baseline (displacemtn= 0)

This should make it easy to work out the phase difference (Just sketch 2 waves like I did which cross at the 0 point in opposite direction.....