GCSE Physics - Liquid Pressure & Upthrust #49

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This video covers:
- How water creates pressure
- How to calculate the pressure of a submerged object (P = hpg)
- What determines if something floats or sinks
- What upthrust is
General info:
- Suitable for all GCSE and IGCSE courses
- See below for whether it is higher or foundation tier for your exam board
- See below for whether it is triple or combined for your exam board
Exam board specific info:
AQA - Separate science (triple) and higher tier only
IGCSE Edexcel - You don't need to know about upthrust but everything else in suitable for everyone
Edexcel - Separate science (triple) and higher tier only
OCR 21st Century - Separate science (triple) and higher tier only
OCR Gateway - Separate science (triple) and higher tier only
GCSE Chemistry playlist:
• GCSE Chemistry - Atoms...
GCSE Biology Playlist:
• Video
GCSE Physics Playlist:
• Video

Опубликовано:

26 июл 2024

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Комментарии : 77

@irusu6771 4 года назад

My science teachers always play your videos in class. The only time I understand. You explain things so simply yet so well. Thank you so much 🙏🏽

@Cognitoedu 4 года назад

Hey thank you for such a kind comment! Really happy to hear the videos are helping you out, and wishing you loads of luck for your work 🥳

@nstar3489 4 года назад

I didn't realize pressure was this easy. Thank You!!!

@71yearoldofc 4 месяца назад

Gal what you on this hard wha-

@CHICHI-vn9kd 8 месяцев назад

I got stuck in the physics lesson today about Upthrust. After watching your video, I felt much clearer than before. Especially of the definition of Upthrust. My teacher told me that" the displaced fluid exert a force upwards towards the object" which I didn't fully understand. But I understand much better now with the pressure. Thank you

@nahlahnaairah2438 4 года назад

Great videos. I like the animation style :)

@Cognitoedu 4 года назад

Thanks! Glad you like them and they’re useful to you 🙌

@dylan5360 3 года назад

Thank you! Have learnt so much from this video. Keep up the great work.

@neoneditz92 5 месяцев назад

I appreciate what you do man, i previously had issues with Physics and Chemistry, it was hard to understand some topics for example this exact one, but becoz of your vids, I've improved SIGNIFICANTLY. Thank you.

@alexandrmxox 3 года назад

Great video! This topic is very confusing so thanks very much!

@mr.fallhigh5081 3 года назад

Thanks! I understand up thrust like eating a cake keep up the great work!

@Cognitoedu 2 года назад

If you’d like to practise what's covered in this video, check out the lesson on the Cognito platform - cognitoedu.org/coursesubtopic/p2-gcse-aqa-h-t_2.13. The platform’s totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom

@archjanasivasuthan6252 4 года назад

Your GCSE videos helped me so much!! I'll never unsubscribe from your channel!!! I'll recommend you to all the year 10/11's that I know of! Also, are you thinking of doing a level videos too? Would be extremely useful because my teachers seem to not know what they're doing.

@Cognitoedu 4 года назад

Hey Archjana, thank you for such a lovely comment! We really Appreciate your support!! I’m sorry to say it’s likely we won’t be doing A levels for quite a while. We do intend to, but each A level would take approximately as long as everything we’ve done so far - so we’re going to tackle more GCSE stuff first :)

@armstrongtixid6873 3 года назад

They've almost finished all of GCSE as of early 2021, so they'll probably go to A Level soon I hope.

@mehirali7388 3 года назад

keep going love your method

@LozArcher 4 года назад

Very helpful and love the drawings that go with it!

@syedzafar3068 3 года назад

great explanations

@user-rp5qd9om8s Год назад

Thank you sir for the great explanation ❤

@shuveeni2374 9 месяцев назад

thank u for these videos u are saving me x

@mr.migallo1138 4 года назад

Cognito, firstly, your videos are excellent, and I thank you for your work. In this video you start by talking about part of the static pressure being down to 'particle collisions' and that this 'component' becomes less significant as depth increases. I am not sure whether its helpful for GCSE students to think of hydrostatic pressure in these terms. As far as I understand it, the relative static pressure beneath a liquid is solely the product of density, depth and g. If it were a function of the rate of collision then surely the temperature of the water would influence it? The thermal motion of the liquid molecules adjacent to the submerged object's surfaces should not be thought of in the same light as the translational motion of particles in a gas.

@chloe-us5jf 3 месяца назад

thank god this channel exists, my teacher cant teach for shit so without you im doomed, thank you!!

@brendonoreilly9593 6 месяцев назад

Thanks so much for this! I'm studying level 4 physics now and this equation has made it so clear! I see the light! Cackle!

@silverminty861 2 года назад

The graihics of these videos are so nice and aesthetic really helps to understand almost any topic lol

@Cognitoedu 2 года назад

Ah thanks so much :)

@icy3203 Год назад

tanks a lot

@N.DZ80EDITS Год назад

these comments are ancient 👴

@vandine690 2 месяца назад

Even yours is

@iambored4386 2 месяца назад

@@vandine690lmao ikr 😭

@vandine690 2 месяца назад

@@iambored4386 😂lol

@snackpubg8993 Месяц назад

Fir sure@@vandine690

@N.DZ80EDITS Месяц назад

@@vandine690 LOL

@user-hm3gk8bg6m Месяц назад

Morning creamers for physics paper 2 (it’s finally my turn to say this)

@glichman-xw9ey 3 месяца назад

Thank u very much

@PriscilliaOkoro415 7 месяцев назад

Thank you

@miagore6022 3 года назад

great vid!

@isabelhaywood817 3 года назад

nice

@miagore6022 3 года назад

@@isabelhaywood817 fancy seeing you here

@faresahmed9190 7 месяцев назад

im currently in grade 8 and studying the things im taking for igcse right now to make things easier for the next year

@sajamohammed6026 2 года назад

thanks for the lesson I am understand the concept i need to help are you can help me please

@Saddafa-p1q 6 месяцев назад

is this also for gcse combined science

@lochanarajapaksha4054 Год назад

👏👏

@kwil443 3 года назад

niiiiicceeeeeeee

@VioletChloe 4 месяца назад

Great video but I don’t quite understand why the bottom of the object would have a higher pressure because it is deeper,I thought the depth only mattered for the downwards force because of the weight of the water above pushing it down,can someone please explain this to me,thanks.

@khushimodhwadia9342 3 месяца назад

im not sure either but i think its because the bottom of the object has more particles colliding with it than the top cus theres more water below the object than above it. im not sure but thats what im guessing

@eliassinau2932 2 месяца назад

It's like a ball, the more u push it into the water the harder the effort it needs for it to be pushed further down.

@amnakhan2265 Год назад

I'm thought with a different formula which is p=f / a

@amayaphotos8016 2 месяца назад

that formula is for objects in the air. This one is only for objects that are in a liquid. that's why it's called, 'liquid pressure'

@43dl3ntil Месяц назад

They are the same formula.

@user-np8nl2hq7u 11 месяцев назад

Where did you get the 9.8 from

@user-np8nl2hq7u 11 месяцев назад

Please can you try to explain

@M4D_H4TT3R 8 месяцев назад

9.8 is the value of Earth's gravitational field. It is constant and you just have to memorise it.

@ranasamy8339 3 года назад

From where did we get 9.8 ??

@rz1sa 3 года назад

gravitational field strenght of the earth, most teachers say its 10N but im guessing 9.8 is the real value. Still i would use 10N just to be safe

@johnc9505 3 года назад

@@rz1sa 9.8 is actually the most accurate value to use, your school may be diff but our teachers always say use 9.8 unless the question indicates to estimate or has given the value of 10N in the question - I believe using 9.8 is safer :)

@aqacquires4243 2 года назад

@@johnc9505 im pretty sure it dosen't matter in igcse so using both 10 or 9.8 are options

@tinyaudanielwong6086 2 года назад

@ogundejibisola3335 11 месяцев назад

Where that 9.8 come out

@M4D_H4TT3R 8 месяцев назад

9.8 is the value of Earth's gravitational field. It is constant and you just have to memorise it.

@tanha7289 Год назад

Wa'ta boizzz

@Totally_Chaos 8 месяцев назад

Why is the chicken green???

@kenzyahmed8607 3 года назад

isnt the g 10 not 9.8

@Cognitoedu 3 года назад

It depends on your rounding, to 3 significant figures it's 9.81, so could be rounded to 9.8 if 2 significant figures or 10 if 1 significant figure :)

@Braytech_Official 3 года назад

/_:[Bravo Six]/_:[Going Dark]_....

@raydt_ Год назад

wotah

@anjahaussler3026 9 месяцев назад

I don’t understand you

@M4D_H4TT3R 8 месяцев назад

What exactly you do not understand so I can help you?

@WeGoturback 4 месяца назад

💀

@marvinsingh9960 3 года назад

I promise at the end of the video I had some tears with a smile cuz I was suffering from this chapter for a while but now tbh I'm not completely good with it but still this video made me improved, improved a lot❤️😊 I'm following this channel on Insta apart from subscribing your channel on RU-vid, so that I stay more updated

@Cognitoedu 3 года назад

Ah thank you so much Marvin, it's a tricky topic and we're really glad we could help. I hope it all makes sense soon 🙏