Archimedes principle & buoyancy | fluids | Physics | Khan Academy

Let's explore what Archimedes principle & buoyant force is.
Created by Mahesh Shenoy
Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help!

[@Hino_55]

GREAT EXPLANATION ;)

[@kingsurya3215]

I have never seen someone teaching it so subtly, all my query is resolved, I have been really puzzled about .when I don't get answer, I start getting upset it's become very difficult to live with a question in mind ....thanks u

[@anvaywahal737]

Hulk said "Eureka!!!!!!"....great video

[@jananibaskar6936]

Such a great explanation...Thank you so much for giving the clarity of Archimedes Principle

[@batman-ekbramhachaari6820]

Thjs might be the greatest khan academy video i have ever seen 😮

[@confidenceadjokatse5864]

Thank you very much sir for the powerful tutoring on the archimedes principle

[@anshikajoshi4195]

Mind blowing Helped a lot Thanku so much sir

[@dilankalakshani1934]

superb explanation. Thank you very much for your fantastic lecture. Subscribing your channel, I recommended my kids to watch and learn from you.Thanks from SriLanka

[@omniaosman5732]

You’re Amazing!✨

[@h7opolo]

9:13 just because your lungs might expand, doesn't necessarily mean you will increase likelihood of becoming buoyant. imagine if the lungs were filled with concrete instead. Thus, the expansion of volume does not cause buoyancy per se, nor is it the "displacement of liquid" that causes buoyancy. Buoyancy is dependent on density of materials.

[@hafinessevoice2311]

Thank you! Thank you. Thank you for this wonderful explanation! You teach with ease and your explanation is practically a "bombshell!" 👌🔥🔥so to speak.

[@moseskargbo5617]

Well explained 👍

[@mridulboro7467]

Amazing explanation. Understood easily sir. Thank you so much😊

[@jaja1628]

It helped my son so much😁

[@jaja1628]

great for him

[@Naina_mohanty]

Great explanation..It helped me a lot.🙂

[@shumailamalik6225]

You are just amazing!

[@rinanagar1347]

Thanks 😄

[@predatorgaming895]

Great explaination🔥

[@aryan1389]

Absolutely fantastic lecture blyaaad!!!

[@PranavKumar-dd2xo]

This deserves millions of views

[@gitaglobalschool3218]

The time at present is 11:38 am and at 1:45 pm my science final exam will start in school for which I will depart at around 1 pm. My 9th grade whole biology + gravitation is left and now I am wasting my time writing this comment

[@viratkohli78892]

Whoever you are, wherever you are, whatever religion you belong to, you are God to me. In terms of science

[@kihustle6184]

Thank you veryy muchhhh

[@Diya.Dasari]

thank you sir

[@user-dt7hr4xe1t]

I love you explanation

[@meghasharma7746]

"BEST"🙏

[@cagasmarkrommel3436]

Thanks

[@rscorT101]

OP EXPLANATION

[@Error-br8se]

Thank you sooooooooo soooo sooo sooooo muchhhhhhhhhhhhhhhhhhhhh

[@wise_old_tree]

Legit god

[@veenaraghavendra8574]

Will the upthrust be same on an object when it is submerged in liquids of different densities? Kindly explain this

[@BongelaMnguni]

A denser (heavy) liquid will cause a more Buoyant on the same object if it were submerged on a less denser liquid. Example: suppose I have two liquids Water (density = 1000 kg/m3) Air (density = 1 kg/m3) Then I submerge an object with a volume = 1 m3 in both liquids. Note that: weight of submerged liquid (buoyant) = density of liquid × volume displaced by object on that liquid So in water: Buoyant = 1000 kg/m3 x 1 m3 = 1000 kg In air: Buoyant = 1 kg/m3 x 1 m3 = 1 kg So you see that the same object experiences 1000 kg of buoyant in water and 1 kg in air

[@vijayapatnaik7152]

Sir how can i get code for join class in khan academy app, please sir i want it

[@beingtohuman]

Doesn't buoyant force differ in accordance with density of various materials?

[@predatorgaming895]

Bouyant force depends on volume..... If mass is more then it sinks... If mass is less then it floats ..

[@manasviii7960]

okay doubt- why do ships sink sometimes....the same amt of buoyant force is acting on it right??

[@harshvardhanmankotia6492]

Water fills in

[@oliviadegonia2788]

ships will sink usually when water fills the space..this would increase the mass while the volume stays the same and will increase the density so that the it’s greater than the water. this will then cause the boat to sink :)

[@ujaanroy3075]

The formula of pressure is h*rho*g where rho is density. This tells us that pressure depends on the material that is submerged. But you said it does not matter what material we put in the water, the buoyant force remains the same. Why?

[@ut6582]

Hey Dumb dumb rho is the density of the liquid, not the object being submerged. Use thy brain. (

[@worldofmusic1058]

@@ut6582 He said the same. Density depends upon the material, or more specifically, the compound or element which have different density. I too have that doubt.

[@nkaurum3482]

@@worldofmusic1058 rho here means the density of the fluid and not the density of the object

[@DevRSingh]

Hye sir, is FloatHead Physics also yours???

[@gk2853]

Yes, its his

[@kidskudos4775]

I have a doubt

[@gdftech3401]

then why a wooden block floats n water Hope u read my comment

[@mainangatia2039]

The density of wood is less than that of water so the density of the water it will displace will be greater than that of the wood. According to the formula buoyancy = weight of displaced fluid so if the displaced fluid weighs more than the wood it generates a greater buoyant force thus the flotation. I really hope I've helped. Physics isn't my thing but I really wanted to help.

[@Aaliyah_Matyevna]

@@mainangatia2039 Why is the density of water more than wood?

[@bikobiko]

@@Aaliyah_Matyevna wood is more hollow than water. Depends on what kind of wood though

[@wise_old_tree]

Monke says EURAKA!!!!

[@inderveersinghsount9017]

Density of common salt is more than density of water . Then why sodium chloride dissolve in it??