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If a pulse pr...

Question

If a pulse produced in a slinky takes 24 s to complete 6 journeys from end A to the other end B and then back to A, find the speed of the pulse along the slinky. Given the distance between the two ends, A and B is 4 m.

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Solution

Total distance moved by the pulse in 24 s = $4 \times 2 \times 6 = 48 m$
So, speed of the pulse = $\frac{48}{24} = 2 m / s$

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