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Therefore, at a point in simple harmonic motion, the maximum velocity can be calculated using the formula $v=A\omega $. So, substituting the value of y in equation, we get: Now, we know that velocity is maximum when $y=0$, i.e., displacement is zero and acceleration is zero, which means the system is in equilibrium. In Simple Harmonic Motion, we know that velocity can be found using the formula,

so from the wave we can know the point where velocity will be maximum and the corresponding value of other variable at that point, which when substituted in the formula for velocity will give the formula for maximum velocity. Hint: In this type of questions, to get the formula for calculating maximum velocity, first the formula for velocity should be known and then since simple harmonic motion is related to waves, which has amplitude, wavelength, etc.