Chapter 16493In the frame of reference of the ground, once pulse moves backward at speed vvv002+=and the other forward at vv00−=. The one pulse makes two revolutions while the loopmakes one revolution and the other pulse does not move around the loop. If it is generatedat the six-o’clock position, it will stay at the six-o’clock position.v0v0v0FIG. P16.64(c-2)P16.65(a)Assume the spring is originally stationary throughout, extended to have a length Lmuchgreater than its equilibrium length. We start moving one end forward with the speed vatwhich a wave propagates on the spring. In this way we create a single pulse of compressionthat moves down the length of the spring. For an increment of spring with length dxandmass dm, just as the pulse swallows it up,
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