First slide

Relationship between phase and path difference

Question

A particle B executing S.H.M given by equation $y = 8 \sin 6 π t$ is sending out waves in a continuous medium travelling at 200 cm/sec. The resultant displacement of the particle 150 cms from B and one second after the commencement of vibration of B is

Difficult

Solution

$\begin{array}{l} 2 π n = 6 π \\ λ = \frac{ν}{n} t h e n \\ y = 8 \sin 2 π [\frac{t}{(1 / 3)} - \frac{x}{(200 / 3)}] \\ W h e n, t = 1, x = 150 c m y = 8 c m \end{array}$

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