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Question

in a 6m long slinky, it is observed that a longitudinal wave completes 4 waves in 10 sec. on these observation find the speed of wave in slinky .
 


Solution

Since the wave is produced on the string, length of each to or fro is 6 m.

And, we have 4 to and 4 fro and hence total of 8 to or fro.

So, distance traveled by these 8 to/fro is = 8 × 6 = 48 m

Time taken is = 10 s

So, speed = 48/10 = 4.8 m/s


Physics

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