Mon March 04, 2013 By: Arathi M

To find the displacement of a body in simple harmonic motion, we have two formulas. One of them uses sine function and the other one uses cosine function. How am i supposed to understand which formula is to be used?

Expert Reply
Mon March 04, 2013
Both of those formulas give the same results but with the difference that in one formula, we have chosen the mid point to be 0 and in other we chosen the extreme points to be zero.
It all depends on the initial conditions.
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