HW-120 3. Each of the diagrams below represents a snapshot off two springs insta

Question

HW-120 3. Each of the diagrams below represents a snapshot off two springs instant after a pulse has at an tightly coiled reached the boundary between them. The linear mass density, is greater for the spring than for the other spring. For each diagram: Each diagram may contain flaws that would not be observed with real springs. a. Determin whether there is a flaw. If there is a flaw.describe it (a single flaw is sufficient) and continue to the next d If there are no flaws, answer parts b and c. Make a sketch that shows the shape, width, and direction of motion of the incident pulse. b. c. Determine which pulse is the reflected pulse and which is the transmitted pulse. Tightly coiled spring Slinky Tightly coiled spring Slinky

Explanation / Answer

i)

a). we can see that in given figure, the wavelength of tightly coiled spring(heavier) is greater than slinky(lighter) spring which is a flaw. it should be opposite.

ii).

a). flaw - we can see that in given figure, there is an inversion of pulse in lighter string but we know that when pulse travel heavier to lighter spring there should not be an inversion.

  

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