1.

A string of length 20 cm and linear mass density 0.40 g cm^-1 is fixed at both ends and is kept under a tension of 16 N. A wave pulse is produced at t = 0 near an end as shown in figure, which travels towards the other end. (a) When will the string have the shape shown in the figure again ? (b) Sketch the shape of the string at a time half of that found in part (a).

Answer» <html><body><p><br/></p>Solution :a. <a href="https://interviewquestions.tuteehub.com/tag/velcity-3258504" style="font-weight:bold;" target="_blank" title="Click to know more about VELCITY">VELCITY</a> of the wave <br/> `v=<a href="https://interviewquestions.tuteehub.com/tag/sqrt-1223129" style="font-weight:bold;" target="_blank" title="Click to know more about SQRT">SQRT</a>((T/m))` <br/> `sqrt((16x1^5)/0.4)` <br/>`=2000cm/sec` <br/> `:. Time taken to reach to the other <a href="https://interviewquestions.tuteehub.com/tag/end-971042" style="font-weight:bold;" target="_blank" title="Click to know more about END">END</a> <br/> `=20/2000=0.01sec` <br/> Time taken to see the <a href="https://interviewquestions.tuteehub.com/tag/pulse-1172446" style="font-weight:bold;" target="_blank" title="Click to know more about PULSE">PULSE</a> again in the origiN/Al <a href="https://interviewquestions.tuteehub.com/tag/position-1159826" style="font-weight:bold;" target="_blank" title="Click to know more about POSITION">POSITION</a> <br/> `=0.01xx2=0.02sec` <br/> b. At t=0.01s, then will be a trough atthe right end as it is reflected.</body></html>


Discussion

No Comment Found

Related InterviewSolutions