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Question

A pulse was created in a slinky of length 4 m by a group of students. They observed that it returned, after reflection, at the point of creation 6 times in 10 s. Calculate the speed of the pulse.


Solution

Total distance moved by the pulse in 10 s =4×6×2=48 m
We know that, Speed=DistanceTime
=4810=4.8 m/s

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