Two particles executing SHM of same amplitude of 20cm with same period along the same line about same equilibrium position. The maximum distance between the two is 20cm.
The trouble for me is what should be the equation of position of the SHMs. Is it a sin function or cos function? It seems to me that both the functions should be equivalent because it should not depend upon from where we take the phase of the SHMs. I mean the phase difference between them is constant value.
Please help me visualise the scene going on.