Left on the Pot with no Toilet Paper? Math Is To The Rescue!

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Ever been stuck without toilet paper? We have too. In this video we use differential calculus, mathematical modeling, and data simulations to show just how fast toilet paper gets consumed and what the best strategy is to avoid leaving someone else without that precious paper while on the loo.
Math The World is dedicated to bringing real world math problems into the classroom and answering the age old question “when will I ever use this?”
We use unique topics for algebra, trigonometry, calculus, and much more and go beyond context problems and use a technique called mathematical modeling to find solutions to real world questions and real world problems. These videos are great for students who plan to enter technical fields that require real world problem solving, and can be a great resource for teachers looking for ways to bring real world contexts into their classroom.
Instagram: / maththeworld
Twitter/X: / math_the_world
Facebook: / maththeworldproject
Email: MathTheWorld@byu.edu
Created by Doug Corey
Script: Doug Corey and Jennifer Canizales
Audio: Doug Corey
Animation: Jennifer Canizales
Music: Coma Media
© 2023 BYU

Опубликовано:

18 июн 2024

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Комментарии : 53

@steveboel12 9 дней назад

wait wtf 70% of the world doesn't have regular access to toilet paper?!?!?!

@BoBandits 9 дней назад

Was that in the video? I missed that.

@lkahfi 8 дней назад

Who need toilet paper if you have access to clean water?

@Goldfighter5 8 дней назад

@@BoBanditsabout 7 seconds in

@STEAMerBear 8 дней назад

You don’t have to travel much to discover this. Try China and especially India if you’d like to experience it.

@Cen_t1369 8 дней назад

We have better ways like using a bidet

@thescooshinator 8 дней назад

I love videos like this, where it's just "here"s the mathematical answer to a weird problem".

@chrisracer2007 9 дней назад

How about what is the optimal way to hold the max amount of water in your hands?

@MathTheWorld 8 дней назад

Oh, we have a video in the works that relates to this! Checkout the two videos on condiment cup optimization. The third one extends that problem in a way that relates to the hands cupping. I will try to make that explicit in the video. Thank you for asking! By the way, do you have a particular context that you are asking about? Is this for washing your face (so the water isn't in there very long) or for transporting water over a further distance (where significant leakage might be an issue)? Thanks! Video 1: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-LXzN5aex44Y.html Video 2: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-jSR-QR2GRqQ.html

@pedrogarcia8706 6 дней назад

The first answer is intuitive since a single square contributes less of the roll's volume when the roll is bigger

@happily_blue 8 дней назад

For those who pee standing up, where should we be aiming to minimize splatter? Might be out of the scope of what math can solve for without physics, but thought I could ask anyway.

@MathTheWorld 8 дней назад

That is a good question. My quick response is to aim so the angle of the stream hits the bowl so the angle between the two is the smallest. There were scientists working on a urinal design that was splatterless, and they eventually found such a design. You might be able to find it if you look it up.

@WestExplainsBest 9 дней назад

I was actually going to make this same video! You beat me to it!

@MathTheWorld 8 дней назад

Oh, I am glad! I just looked up your channel. It looks good! I hope you keep growing. It took us forever to get to 2K subscribers, but it really took off after that (you know, for a math channel).

@goodguyamr6996 6 дней назад

I think the real question is why use a sheet of tree pulp to wipe your bottom, sometimes not getting everything out, instead of using good old water to get every nook and cranny cleaned

@dannypipewrench533 5 дней назад

2:22 That is the textbook I had for calculus.

@lauraipsums 5 дней назад

Love your videos, man!!! Cheers from brazil 🎉

@drslyone 9 дней назад

At 6:00, it might help to set R to be the initial radius (a fixed value), then for r=1/2×R or r=1/3×R, we see the roll decreasing twice or three times as fast, since dr/dt is inversely proportional to r. It looks like you have r as the variable for current radius, but also use 1/2r and 1/3r as the current radius.

@MathTheWorld 8 дней назад

Thanks for catching that. Yes, that would have helped to make things more clear. Do you want to volunteer to watch our videos pre-launch? I always seem to miss those little things when I see the version the team sends me for approval. (Maybe it is because I am sick from hearing my own voice).

@drslyone 8 дней назад

@@MathTheWorld I'd be honored.

@Almondz_ 9 дней назад

Very useful video, thganks! I'll do the exact opposite so I can leave someone without anything

@benbookworm 7 дней назад

6:37 ah, that name brings back some trauma. A professor cursed me by requiring LaTeX, and now I can never leave its infinite frustrations behind.

@Qermaq 8 дней назад

What else that would be interesting is how much toilet paper is on a regular roll compared to the large commercial rolls in the public restrooms, taking into account the core radius and the entire radius?

@jcorey333 9 дней назад

Cool video!

@MathTheWorld 8 дней назад

Thanks for the visit to our channel! (Thank you also for the visit to our campsite last night. It was fun!)

@Archimedes_ 8 дней назад

Small rollers rise up

@MathTheWorld 8 дней назад

Amen. But don't rise up too soon. Finish your business first.

@user-lz4vp2ox3c 5 дней назад

It all depends on how much you poop

@PreciselyGeneral 7 дней назад

I have thought of this so many times but never gotten to the answer

@MathTheWorld 6 дней назад

Well now your time on the pot will not be spent and frustration wondering about it!

@Maanvik_ 8 дней назад

People who use water

@MathTheWorld 8 дней назад

Water is becoming much more popular in developed countries with toilet seat bidets. I was actually astonished when I was doing research for this video to find out how many trees are cut down each year just for toilet paper.

@heylex3109 7 дней назад

The big TP industry will never let the US convert to the superior water system

@eugenetswong 4 дня назад

I'm surprised that you needed math to tell you to use the small roll first. Maybe you are just trying to be humourous.

@fullfungo 8 дней назад

I find the choices you made a bit confusing. You use the area of length•thickness which is the area of the EDGE of paper. But whenever normal people talk about area of toilet paper, they typically imagine the SURFACE area of the paper, i.e. the functional side of the paper. This will certainly lead to a lot of confusion from the viewers. It might be a good idea to make this point more explicit, so that people don’t get lost. Alternatively, it might have been better to talk about the volume of paper, which is more natural for some.

@Criz454 9 дней назад

did not ask

@lih3391 9 дней назад

No one asked you either though, it cancels out😑

@LeTtRrZ 9 дней назад

I did. This video was made for me. Thank you for finding it for me.

@EpicMethGaming 8 дней назад

do not care

@molybd3num823 8 дней назад

bait

@Criz454 6 дней назад

@@lih3391 i was on toilet and saw the video being like "No views | 40 seconds ago" and didnt think of anything funnier than pretending the video is directly addressed to me