Which of the following curves represents correctly the oscillation given by $y = {y_0}\sin (\omega \,t - \phi )$, where $0 < \phi < 90$
Medium
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(d) Given equation $y = {y_0}\sin (\omega \,t - \phi )$
at $t = 0$, $y = - {y_0}\sin \phi $
this is the case with curve marked $D.$
at $t = 0$, $y = - {y_0}\sin \phi $
this is the case with curve marked $D.$
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