Length of rubber band determines pitch | Sound | Physics

Have you ever wondered why the strings in a piano are of different lengths? In this activity we see how the frequency or pitch of a wire depends on its length. Take a box and stretch a rubber bad around it as shown in the video. Put two pencils beneath the band and listen to the sound produced on plucking the band. Keep increasing the distance between the pens and listen to the sound produced each time. You will notice that at the shortest length the sound is sharp and as the length increases the pitch becomes lower. In musical instruments, we either have strings of different lengths (piano, harp) or use our hands to change the length of the strings (guitar, violin) and thus produce sounds of different pitches.

[@devnadkarni8d515]

very nice explanation

[@user-sx6wb1uk2y]

Thanks super useful and helpful!

[@pracchikukreja1833]

sir superbly explained

[@sqi_googie]

WE HAVE PROOF THAT RUV SOUNDS LIKE A RUBBER BAND NOT A DRUM

[@ronneff5894]

When you want us to listen to the change in pitch you shouldn't be talking over the exact time when you want us to listen.

[@teawithurvika8724]

I agree

[@JDs_Fantasy]

thanks a lot ❤❤❤❤❤

[@torrywolfram3102]

thanks man

[@sardeen]

thanks

[@kk-kx7fk]

Thanks a lot i did it in my project

[@poojalicgupta7310]

I want to see that experiment of how wavelength is produced....

[@margaretteroa2086]

Thanks a lot with this!

[@leafyispinecone3710]

Thank you :D

[@tulipling5746]

This is helpful thx

[@vanharoldmabini3251]

thanks! Very helpful to my physics class

[@natashabrowning1869]

Yeah it helps in my science on a design on hpw to make a pitch change thank you for helppppppppp☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺thank youuuuuuu people

[@swaroov9236]

according to you,i agree completely and thanks but i have a question for example a guitar if tuned to E in a 650 mm guitar,but if it is tightened some more it will be lower C,D,etc tension also change frequency,is it true?

[@priyawanthene9506]

True

[@jamesscholl2729]

Thanks a million!

[@jamesdean2537]

Thanks it helped me with a experiment I was doing!!😃👍

[@natashabrowning1869]

Its not youuuuuuu alone it had help me too😁😁😁😁😁😁😁😁😁

[@mohammadsajjadahmad9816]

Me too

[@floralangelic3410]

me toooo

[@AbhinavKumar-xz5fx]

Very nice explanation. Experiment was awesome. It helped me a lot. Thank you.👏👏 Keep going. Best of luck.

[@vishalcreation796]

Very useful information . Thanks !

[@stephaniemarinelli4782]

What about stretching a rubber band? The longer the band is stretched the higher the pitch?

[@pietropratico]

Hi Stephanie. Yes, I think so. In that case, what comes into play is the thinning of the rubber band as you stretch it ,which gives you a higher pitch. So, thinning should offset the length. I'm not an expert but I gave it a shot ;)

[@railisa7148]

thanks i understand now

[@KClassScienceChannel]

We're glad to hear that. Which are your favourite K-Class videos, have you shared them with your friends?

[@sukhmanrules4545]

Thanks I was doing science and we where learning sound and we where making a guitar out of cardboard and it helped me a lot and I ended out getting a A+

[@documentaryworld3828]

Ew your face Makes me wanna throw up

[@moazelkady5616]

Hi my miss send this to me ✅🤣

[@MariaFRuano]

:) My thch has sherd screen on zoom on same vid LOL

[@kccreativeandmusicchannel1272]

i can do this

[@jogates5237]

you can do it

[@UniqueDimension]

All day

[@parveenyaligar7072]

Easy

[@scatmanjohn4829]

very bad information

[@scatmanjohn4829]

booo