Which of the following curves represents corr | vedclass

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(D) The given equation for the oscillation is $y = y_0 \sin(\omega t - \phi)$.At time $t = 0$,the displacement is $y = y_0 \sin(0 - \phi) = -y_0 \sin

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$D$

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(D) The given equation for the oscillation is $y = y_0 \sin(\omega t - \phi)$.At time $t = 0$,the displacement is $y = y_0 \sin(0 - \phi) = -y_0 \sin \phi$.Since $0 Looking at the graph at $t = 0$ (the vertical axis):Curve $A$ starts at a positive value.Curve $B$ starts at zero.Curve $C$ starts at a negative value,but it is at its minimum $(-y_0)$,which corresponds to $\phi = 90^\circ$.Curve $D$ starts at a negative value between $0$ and $-y_0$,which matches the condition $y = -y_0 \sin \phi$ for $0 Therefore,curve $D$ represents the oscillation correctly.

Which of the following curves represents correctly the oscillation given by $y = y_0 \sin(\omega t - \phi)$,where $0 < \phi < 90^\circ$?

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