1:54 - hourglass itself is lighly bouyant in this liquid with this preasure. When you rotate the tube - hourglass center of mass is higher than center of bouyancy and it tries to rotate (to position when sand at bottom and empty part at top). When it trying to rotate it touches walls of the tube so friction prevent hourglass to float up. When sand pass the half way - center of mass become lower than center of buoyancy and there no more force trying to tip hourglass and no more friction to tube's walls so nothing now prevents hourglass to float up.
Here’s my best take- sand moves within any hourglass and the property of the hourglass that changes most significantly as the sand redistributes is its center of mass. When the assembly is initially flipped over the hourglass is very top heavy with all the sand in the top chamber so it tilts and presses against the wall of the tube with enough force that friction holds it in place. When enough sand moves to the bottom, the hourglass straightens up lessening the friction, and it then begins to rise.
For the hourglass floating in the tube "puzzle": When the bottom of the hourglass is empty it is more buoyant than the top, so it tries to flip to the top, but its stopped by the sides of the tube, wedging it in place. Once just over half the sand is in the bottom it floats upright and rises.
Allow me to add more details to what Robert said. The reason that it's "wedging it in place", is because of the friction between the hourglass and the cylindrical container. If the surfaces were to have zero friction, the hourglass would have ascended at the beginning.
7:37 The rotation of the liquid inside is due to Centrifugal force and the rotation of the blade is Centripetal force. Centrifugal force is pseudo force.
your quiz is uncannily timed since i just relearned the definitions of centripetal and centrifugal on the same day you posted this vid. centripetal is the force that keeps an orbiting object near its axis of orbit, which can be thought of as opposing the centrifugal pseudo-force that is causing the orbiting object to move away from the axis of orbit. 7:25
Yes! Centripetal force is the component of force acting on an object in curvilinear motion which is directed towards the axis of rotation or center of curvature. Centrifugal force is a pseudo force in a circular motion which acts along the radius and is directed away from the center of the circle.
Recently, we saw the butterfly with ant biting it poorly, We gently hold the butterfly's wings while carefully remove the ant below it. We found no puller as quickly as possible to remove the ant biting butterfly poorly, but we found nipper and use it carefully to remove ant without any harm to butterfly's legs. That was dangerous, but fortunately, we manage to do it carefully and now the butterfly is save and free from that annoying ant.
Great to hear your positive feedback "The most beautiful thing we can experience is the mysterious. It is the source of all true art and science.” - Albert Einstein
Yes! Centripetal force is the component of force acting on an object in curvilinear motion which is directed towards the axis of rotation or center of curvature. Centrifugal force is a pseudo force in a circular motion which acts along the radius and is directed away from the center of the circle.
There was a restaurant in Minneapolis that had large framed pictures that utilized that ghostly lenticular property. I believe it was called Hell's Kitchen (not related to the show). They were really cool.
@@physicsfun 🔴 What Is Islam? ⚠️ 🔴 Islam is not just another religion. 🔵 It is the same message preached by Moses, Jesus and Abraham. 🔴 Islam literally means ‘submission to God’ and it teaches us to have a direct relationship with God. 🔵 It reminds us that since God created us, no one should be worshipped except God alone. 🔴 It also teaches that God is nothing like a human being or like anything that we can imagine. 🌍 The concept of God is summarized in the Quran as: 📖 { “Say, He is God, the One. God, the Absolute. He does not give birth, nor was He born, and there is nothing like Him.”} (Quran 112:1-4)[4] 📚 🔴 Becoming a Muslim is not turning your back to Jesus. 🔵 Rather it’s going back to the original teachings of Jesus and obeying him.
centrifugal force is real, it just doesn't work like you think it does. The spinning liquid is prevented from flying off at a tangent by the centripetal force exerted on it by the wheel,, but the liquid in turn exerts an equal and opposite centrifugal force on the rim. If you sit in a cushioned chair on the edge of a spinning wheel, when you get up the cushion is indented from the weight of your body pressing on it, more than if the chair was stationary. What you experience as "centrifugal force" is the centripetal force of the chair acting on you; what the chair experiences is the centrifugal force that you exert on it.
Glad you enjoyed Science is a way of life. Science is a perspective. Science is the process that takes us from confusion to understanding in a manner that's precise, predictive and reliable - a transformation, for those lucky enough to experience it, that is empowering and emotional..
What’s the one thing you like about @physicsfun RUclips channel?
where are you all from 🌍?
your videos are great ..❤️ from INDIA 🇮🇳
🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳
the brain-teasing moments when I don't immediately understand how things work 😂
Gfb
I’m from America 🇺🇸. I’m glad that u put me in that’s my favorite part of your RUclips channel
1:54 - hourglass itself is lighly bouyant in this liquid with this preasure. When you rotate the tube - hourglass center of mass is higher than center of bouyancy and it tries to rotate (to position when sand at bottom and empty part at top). When it trying to rotate it touches walls of the tube so friction prevent hourglass to float up. When sand pass the half way - center of mass become lower than center of buoyancy and there no more force trying to tip hourglass and no more friction to tube's walls so nothing now prevents hourglass to float up.
Here’s my best take- sand moves within any hourglass and the property of the hourglass that changes most significantly as the sand redistributes is its center of mass. When the assembly is initially flipped over the hourglass is very top heavy with all the sand in the top chamber so it tilts and presses against the wall of the tube with enough force that friction holds it in place. When enough sand moves to the bottom, the hourglass straightens up lessening the friction, and it then begins to rise.
For the hourglass floating in the tube "puzzle": When the bottom of the hourglass is empty it is more buoyant than the top, so it tries to flip to the top, but its stopped by the sides of the tube, wedging it in place. Once just over half the sand is in the bottom it floats upright and rises.
Allow me to add more details to what Robert said. The reason that it's "wedging it in place", is because of the friction between the hourglass and the cylindrical container. If the surfaces were to have zero friction, the hourglass would have ascended at the beginning.
@@royitaqi thanks, I did kind of gloss over that.
3:30 i really like that sodium fluorescin paperweight. the green-gold is beautiful to me.
7:37 The rotation of the liquid inside is due to Centrifugal force and the rotation of the blade is Centripetal force. Centrifugal force is pseudo force.
your videos are great ..❤️ from INDIA 🇮🇳
your quiz is uncannily timed since i just relearned the definitions of centripetal and centrifugal on the same day you posted this vid.
centripetal is the force that keeps an orbiting object near its axis of orbit, which can be thought of as opposing the centrifugal pseudo-force that is causing the orbiting object to move away from the axis of orbit. 7:25
Yes! Centripetal force is the component of force acting on an object in curvilinear motion which is directed towards the axis of rotation or center of curvature. Centrifugal force is a pseudo force in a circular motion which acts along the radius and is directed away from the center of the circle.
"curvilinear motion" is what i meant by "orbit", but it's more correct, so thanks.
Recently, we saw the butterfly with ant biting it poorly, We gently hold the butterfly's wings while carefully remove the ant below it. We found no puller as quickly as possible to remove the ant biting butterfly poorly, but we found nipper and use it carefully to remove ant without any harm to butterfly's legs. That was dangerous, but fortunately, we manage to do it carefully and now the butterfly is save and free from that annoying ant.
2:44 spring-loaded pistons actuated by thrusting into a cavity, cxe
These are such amazing toys..
Can't wait to have them all 😎
Great to hear your positive feedback
"The most beautiful thing we can experience is the mysterious. It is the source of all true art and science.” - Albert Einstein
@@physicsfun I can't agree to this more
I liked it very much.
How can I get these strings?
Please read video description for details
"Cntrifugal" force isn't really a force. It's all about conservation of angular momentum.
Yes! Centripetal force is the component of force acting on an object in curvilinear motion which is directed towards the axis of rotation or center of curvature. Centrifugal force is a pseudo force in a circular motion which acts along the radius and is directed away from the center of the circle.
3:23 Don't all liquids appear to change colour when something of a different colour is behind it?
i saved your vid for future inspirations. very stimulating inventions here.
4:20 its pretty one, looks like real ufo haha
Is there a way to get one for my desk?
background music is best as always
Glad you liked it
Physics is love, physics is life!
Physics is a beautiful gift to humanity
Physics is the key to our future.
There was a restaurant in Minneapolis that had large framed pictures that utilized that ghostly lenticular property. I believe it was called Hell's Kitchen (not related to the show). They were really cool.
physics is always fun💖
Physics is the best. Still so many unanswered questions. Just when you think you know, you get surprised again.
@@physicsfun
yhh defenitely and that is the best part of physics
@@physicsfun 🔴 What Is Islam? ⚠️
🔴 Islam is not just another religion.
🔵 It is the same message preached by Moses, Jesus and Abraham.
🔴 Islam literally means ‘submission to God’ and it teaches us to have a direct relationship with God.
🔵 It reminds us that since God created us, no one should be worshipped except God alone.
🔴 It also teaches that God is nothing like a human being or like anything that we can imagine.
🌍 The concept of God is summarized in the Quran as:
📖 { “Say, He is God, the One. God, the Absolute. He does not give birth, nor was He born, and there is nothing like Him.”} (Quran 112:1-4)[4] 📚
🔴 Becoming a Muslim is not turning your back to Jesus.
🔵 Rather it’s going back to the original teachings of Jesus and obeying him.
I think 5/5 on the background music👍🏼👍🏼👍🏼👏🏼👏🏼
Glad you enjoyed
Physicsfun is ❤️
Physics is the best. Still so many unanswered questions. Just when you think you know, you get surprised again.
@@physicsfun thanks 😍😁
centrifugal force is real, it just doesn't work like you think it does. The spinning liquid is prevented from flying off at a tangent by the centripetal force exerted on it by the wheel,, but the liquid in turn exerts an equal and opposite centrifugal force on the rim. If you sit in a cushioned chair on the edge of a spinning wheel, when you get up the cushion is indented from the weight of your body pressing on it, more than if the chair was stationary. What you experience as "centrifugal force" is the centripetal force of the chair acting on you; what the chair experiences is the centrifugal force that you exert on it.
OMGOSH IM ON IT
Really great visual experience. Background music could be used to extract confessions from innocent prisoners.
Thanks for feedback I will definitely work on it.
Weebles wobble, but they don't fall down.
Just finished watching something on some other channel that left me hungry for your background music. 5 out of 5 👍
verry very peeerfect
Glad to hear that❤️
Physics is the best. Still so many unanswered questions. Just when you think you know, you get surprised again.
I have hand boiler and mirascope
Where can I buy these gadgets????
Please read video description for details
physics is my life
Love from Bangladesh
Es utilizado el campo magnético de el trompo y transistores a través de efecto hall
5 out of 5
Physics ❤️
Physics is ❤️
Physics describes the real magic of the universe.
PHYICS IS 💘💘💘💘💘💘❤️❤️❤️❤️❤️❤️❤️❤️☮️☮️🛐
I'm from New Jersey, within sight of the skyline of Manhattan. I was born in NYC.
Physics is ♥️
Physics is the best. Still so many unanswered questions. Just when you think you know, you get surprised again.
India🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳
♥️
Physics is❤
Physics is the best. Still so many unanswered questions. Just when you think you know, you get surprised again.
👌❤
Glad you enjoyed
Science is a way of life. Science is a perspective. Science is the process that takes us from confusion to understanding in a manner that's precise, predictive and reliable - a transformation, for those lucky enough to experience it, that is empowering and emotional..
Physics is hart
physics is
👍❤🌺🙏
PHysics is
Physics is the best. Still so many unanswered questions. Just when you think you know, you get surprised again.
🎩🎩🎩🎩🎩
Background music 2.
Sorry for the music.
Thanks for feedback I will definitely work on it.
@@physicsfun dont worry, not everyone like the same
Us🇱🇷
Ggn
r/ihadastroke
Meh 🫤