A series of pulses of amplitude 0.24 mis sent down a string that is attached to

Question

A series of pulses of amplitude 0.24 mis sent down a string that is attached to a post at one end. Thepulses are reflected at the post and travel back along the stringwithout loss of amplitude. (a) What is the amplitude at a point on thestring where two pulses are crossing, if the string is rigidlyattached to the post?
1 m
(b) What is the amplitude at a point on the string where two pulsesare crossing, if the end at which reflection occurs is free toslide up and down?
2 m (a) What is the amplitude at a point on thestring where two pulses are crossing, if the string is rigidlyattached to the post?
1 m
(b) What is the amplitude at a point on the string where two pulsesare crossing, if the end at which reflection occurs is free toslide up and down?
2 m

Explanation / Answer

b) Amplitude A= 0.24+0.24 = 0.48 m Since 0 degrees phase occured at the free end.

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