Physics question (1 Viewer)

[YBK]

Hey guys... i was wondering if I could have some help. We have a physics assignment (worth 25%), one of the questions was, what would happen if a longitudinal wave is set up in a slinky spring.

Predict what will happen to the speed of the wave (giving explanation) if:
a) The slinky is stretched further
b) A heavier string with the same tension is used
c) A transverse wave is used instead a longitudinal wave

I think that when the slinky is stretched further it will go faster.

When a heaver string with the same tension is used, it will go slower

And if a transverse wave was used instead of a longitudinal wave, that it would go slower.

I just don't know why...

help please !!

thanks!!!!!!

 

[A l]

It should have something to do with the elasticity and density of the medium. There is a formula for this that I don't think is in the Physics Preliminary syllabus but here it is:

v= √B / √P

Where:
v - velocity
p = density of the medium
B = elasticity

 

[YBK]

It should have something to do with the elasticity and density of the medium. There is a formula for this that I don't think is in the Physics Preliminary syllabus but here it is:

v= √B / √P

Where:
v - velocity
p = density of the medium
B = elasticity

Thanks! I think you're right... i searched for something like that on google after you mentioned it.

I think I understand the formula, but the proof makes no sense... :S

ah... i think i'm going to give a few examples when i write the answer.