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A wave pulse on a string has the dimensi...

A wave pulse on a string has the dimensions shown in figure. The wave speed is `v=1 cm//s`.

(a) If point O is a fixed end, draw the resultant wave on the string at t=3 s and t=4 s.
(b) Repeat part (a) for the case in which O is a free end.

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The formation of the reflected pulse from the fixed support is similar to the overlap of two in vertical pulse traveling in opposite direction as shown below
`:. ` At `t=4.5` net displacement of all particles of string will be zero, i.e. the string will be straight as shown

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