i dont understand how to answer questions relating to the direction in which a point on a wave vibrates if the wave is moving in a certain direction, plz help!!!
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plz help AS physics watch
- Political Ambassador
- Thread Starter
- 27-12-2014 18:24
- Official Rep
- 31-12-2014 18:40
Sorry you've not had any responses about this. Are you sure you’ve posted in the right place? Posting in the specific Study Help forum should help get more responses. Hopefully someone will be able to get back to you
- 31-12-2014 21:17
or a longitudinal wave (P wave) like a sound wave in which case it's forward and backward in the same direction as the waves direction of travel.
- Study Helper
- 31-12-2014 21:25
For instance, wiggling a skipping rope produces a transverse wave where the shape of the rope looks like a sinusoid.
Sound moving through air produces a longitudinal wave formed by pressure compression and rarefaction of the air.
Longitudinal waves move particles back and forth parallel to the wave propagation. (direction of travel of the wave).
Transverse waves move the particle perpendicular to the direction of wave travel.
- 01-01-2015 19:07
If you would like to know the direction of travel at a certain point on a transverse wave, simply draw a wave in front of it. As seen in this video https://www.youtube.com/watch?v=Ka_NNaBT4s0#t=79, it's a really easy way of working it out.