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Longitudinal and transverse waves

  • Thread starter Rashid101
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  • #1
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hey friends please solve my problem
Both longitudinal and transverse waves can propagate through a solid. A wave on the surface of a liquid can involve both longitudinal and transverse motion of elements of the medium. On the other hand, a wave propagating through the volume of a fluid must be purely longitudinal, not transverse. Why?
 

Answers and Replies

  • #2
I think because in the 'bulk' of the fluid there's no restoring force except to the compression -- hence longitudinal wave. At the surface because there's an interface, there's a restoring force that can support transverse oscillation to the direction of propagation.
 

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