A transverse wave is moving along a rope. The diagram shows the rope at time $t = 0$. The wave is moving from left to right. Its period is $T$. A particle on the rope is marked $X$. Which graph shows how the displacement of particle $X$ varies with time from $t = 0$ to $t = 2T$?
Physics 9702 · AS & A Level · Transverse and longitudinal waves