Waves -- How does increasing tension affect frequency and period?

Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
2 replies · 4K views
jerad908
Messages
11
Reaction score
0
Homework Statement
How does increasing tension affect frequency and period (T)?
Relevant Equations
none
Physics news on Phys.org
If you pull gut of violin or guitar tighter so with higher tension the scratch sound gets higher pitch so higher frequency. Period T is inverse of its frequency f, T=1/f.
 
jerad908 said:
Homework Statement:: How does increasing tension affect frequency and period (T)?
Relevant Equations:: none

Using this stimulation: https://phet.colorado.edu/sims/html/wave-on-a-string/latest/wave-on-a-string_en.html

It looks like frequency is decreasing as I increase tension but online it says frequency increases as tension does. Also, I am unsure about what happens to the Period
There is missing information. It is not clear if you are asking about a simple progressive (travelling) wave or a standing (stationary) wave. Also, if you are referring to the simulation, you would need to indicate what settings you used.

Also, you said “It looks like frequency is decreasing as I increase tension”. Even with the missing information I’d guess you have got this wrong - check again!

You said "online it says frequency increases as tension does". Note that this statement is only true for the harmonics of standing (stationary) waves. [Edit: In the case of progressive waves, the frequency is not affected by the tension - the frequency is that of the oscillator.]

Additional Note.
The simulation in your link is for standing (stationary) waves and is quite sophisticated. It includes transient effects and also the driver is not at a node. These 'advanced' features could confuse someone learning at an introductory level.