Mastering Physics Solutions: Two Identical Pulses along a String

Two Identical Pulses along a String

Part A = E

Solution Below:

Two identical pulses are moving in opposite directions along a stretched string that has one fixed end and the other movable, as shown in the figure. Initially, the pulses are moving away from each other.

Part A

The two pulses reflect off the boundaries of the string, and at some later time, they pass through the middle of the string and interfere.

Below are six different sequences of snapshots taken as the two pulses meet in the middle of the string. Time increases from top to bottom in each sequence. Which sequence correctly represents the displacement of the string as the pulses interfere?

The answer is E.


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