I'm obssesed with having a full understanding of things, unfortunately I live in a country in wich with the education that is provided that's almost impossible, but with your videos I've learned those things in an easy way, so I just wanted to tell you THANKS for providing me a well given education, keep on doing it! ❤
@@nicoleescobar8430 What makes you so interested in understanding a topic completely. I just want to move on. Do things I like, I wish I could be more like you. But every individual is different
Sir, your videos have helped me with so many courses all the way from grade 11 to now second year in engineering. I think I speak for a lot of people with this comment. So I just want to say, thank you for everything that you have done for us. You truly deserve what's best in life.
Being extremely picky, at 7:00 the problem does not allow us the find the surface area technically. You are assuming the dimensions are in the order l x w x h but while this is the standard way, multiplication is commutative so it may not be in that order. The area of the base could be 6(5) for instance. Question should perhaps have been more specific
Dear Sir............Example Problem : One hydraulic cylinder, the end is connected to the Threaded rod so that it can be rotated. Cylinders with a bore size of 18 mm, 10 mm rod and a stroke of 300 mm single acting in a condition that is filled with oil. If the cylinder is rotated 10 mm. a. How to calculate it b. What is the gauge pressure
Good stuff, thank you! However on the last example, why would one assume that you would use 9.8 for gravity again when we were initially told that the gravity of the fluid was 1.7? Would gravity not be uniform?
Specific gravity is actually the relative density of a substance, therefore he used that value to calculate the density of the fluid. Whereas the gravity of the fluid is always 9.8, due to the gravitational force from earth. PS. Someone please correct me if I am wrong
@@nilasubramani2820 you're absolutely right..... we have to differentiate between " the specific gravity OF A FLUID " AND " *_THE ACCELERATIONAL GRAVITY or, in other words, the gravitational force from earth...._* ...
pressure is force (SI units would be N) over area (SI units would be m^2). If he had used cm^2 instead of m^2, it would have given him an inaccurate result.
It's one of those things you gotta remember! Essentially though, you get it from a few experiments. But because it's roughly the same number wherever you are on earth, it's become more practical to memorize it than to calculate it every time.
Nice 👍 video I want to correct you in the first numerical. You wrote block and further you wrote book . Nevertheless, your video is the showcase of your efforts.👍🏻👍🏻👍🏻👍🏻
Um, look in the first example what if we take force 150 N since from kg to N multiply by 10.. And the area as 70 multiply by 40 = 2800cm. 2800/100= 28m So P=F/A P=150/28=5.35 which is different from ur answer. Whyy??
So if we deal pressure in water, area is disregarded as the first example if the area increases, the pressure decreases. So if i put a 2m x 3m rectangular block at a depth of 20m below water surface and another block with 10m x 20m, the pressure applied to both rectanguar block are the same, is that correct?
please, how long does it take to fill a swimming pool 7.5m times 18.0m with an average depth of 3.5m, if the water flows from a pipe of 1.5cm diameter with a speed of 1.5m/s?
For the last case can someone explain it to me? In the exercise they gave the specific gravity of the fluid which is equal to 1,7N/m³. And we know the specific gravity(noted gamma) is related to the acceleration(g) by the following formula: gamma= (rho)×g For the pressure: P= (rho)×g×h thus P= gamma×h My question is why did he take the density of the water to calculate the pressure if the specific gravity is already given? Please i'm a little bit confused. Thanks in advance for helping me
It is not constant for other planets in the solar system. They have more mass and have more gravity becoosee of that. That value is only the acceleration of an object in free fall on earth, but is different on other planets
Wait a second. I'm confused about the last problem. What about the area? Don't we still need the area of the cylinder since Pressure = Force / Area? Why wasn't area calculated?
I don't understand why does specific gravity equals to the density of fluid relative to the density of water. Can somebody help explaining this to me ?
Ok so this has been bothering me a little bit, Ive been getting more into pressure physics and every time I think about the shape of a cone and specifically the tip of the cone I can never think of how much pressure is techinally there because how do you measure the surface area for the tip of a cone. Like with a crossbow bolt tip or the tip of a spinning top. Could you help me figure this out?
@Bill Blogs It did help, I was having difficulties when trying to measure hypothetical scenarios. But yea, I was trying to see if there was some way to determine pressures at the very point of a conical surface without the use of micrometers or calipers. In retrospect my comment seemed a bit confusing now that I am reading it again. Thank you very much, I get stuck sometimes.
Physics Video Lessons: www.video-tutor.net/physics.html
I'm obssesed with having a full understanding of things, unfortunately I live in a country in wich with the education that is provided that's almost impossible, but with your videos I've learned those things in an easy way, so I just wanted to tell you THANKS for providing me a well given education, keep on doing it! ❤
where are u from
@@sukumar.s1361 Honduras
@@nicoleescobar8430 What makes you so interested in understanding a topic completely. I just want to move on. Do things I like, I wish I could be more like you. But every individual is different
@@1973Ganesh If you want to do things that you like, then I don't see how you're any different. That's my two cents
@@nicoleescobar8430 x2 :(
Sir, your videos have helped me with so many courses all the way from grade 11 to now second year in engineering. I think I speak for a lot of people with this comment. So I just want to say, thank you for everything that you have done for us. You truly deserve what's best in life.
For me, since 7th grade lol
Are you doing your third year now.?
You're the best teacher i've ever had. You mean so much to us. A sincere salute to you.
you've helped me a lot through the times ive struggled with my academics, and thank you for that
I spent 2 years with this wild man during calculus and here we go again - what a mighty resource!
Easily one of the most underrated channels on TH-cam
My English A2 but I understand all what you say, and it’s great because this is shows that you use very simple words to describe hard things.
This channel should be the number 1 most subscribed channel on YT.
This is another lesson that i have a exam for in less than 1 hour this vid saved me
Bro you're a life saver.. you earned yourself a new sub :)
your my favorite teacher
Amazing. Thank you! You got me started on the penultimate chapter of my mechanics class. I was feeling hopeless. Not anymore :)
Phenomenal. You're just great at teaching!!!! You always handle things with a light touch
7:58, do these numbers make sense? No. Do they serve their purpose? Absolutely! Great explanation and content, sir!
THANK YOU SO MUCH! YOU'RE THE BEST!
such a simple concept, yet blew my mind.
thanks
God bless this people for me.
You are really impacting knowledge to be sincere
Pretty straightforward. Thanks 👏
You are a wonderful man.Grateful if you could simplify balancing equations in chemistry like this.❤
Thank you for the simplicity of this calculation ❤
The all world salutes you sir❤
I have a physics test and I was struggling with understanding the concept of pressure but your videos man are the life saver. Thanks brotha 🙏
same broo
Damn this guy explained it like a proooo
Such a simple but concealed relation! Thanks!
thank you so much !!! i really appreciate all your help with physics and chemistry ! you're are great person !
I can't say thanks enough!
Great, this really helped me!
Thakyou so muchh!Your videos help me a lot in my academics!
this was so helpful. You made physics so simple..THANK YOUU!!!
Thanks teacher you are the best
Thanks man !
You really my best teacher ❤️
you helped me through physics 1 last semester, now onto physics 2 haha
thank you for the great explanation!
Being extremely picky, at 7:00 the problem does not allow us the find the surface area technically. You are assuming the dimensions are in the order l x w x h but while this is the standard way, multiplication is commutative so it may not be in that order. The area of the base could be 6(5) for instance. Question should perhaps have been more specific
At the end when substituting in the pressure equation, you WILL multiply ALL of them sooo....
That's true bro, if the problem were more specified I would get the correct answer but no worries
@@beautifulday1665 Only two variables cancel, leaving one in the numerator. Depending on what you choose height to be, you can get a different answer
thanks so much you such a good person
Thank you so much ❤❤❤❤❤
My teacher gives me the questions that is exactly like yours and I have got two marks cuz of you tnx
May God bless you mann
Dear Sir............Example Problem : One hydraulic cylinder, the end is connected to the Threaded rod so that it can be rotated. Cylinders with a bore size of 18 mm, 10 mm rod and a stroke of 300 mm single acting in a condition that is filled with oil. If the cylinder is rotated 10 mm.
a. How to calculate it
b. What is the gauge pressure
Great lesson.
Thanks a lot,
Good stuff, thank you! However on the last example, why would one assume that you would use 9.8 for gravity again when we were initially told that the gravity of the fluid was 1.7? Would gravity not be uniform?
Specific gravity is actually the relative density of a substance, therefore he used that value to calculate the density of the fluid. Whereas the gravity of the fluid is always 9.8, due to the gravitational force from earth.
PS. Someone please correct me if I am wrong
@@nilasubramani2820 you're absolutely right..... we have to differentiate between " the specific gravity OF A FLUID " AND " *_THE ACCELERATIONAL GRAVITY or, in other words, the gravitational force from earth...._* ...
@@beautifulday1665 Ahh i see, thx for explaining i was so confused before
Thank u 🙏
Nice one
in 4:27, why do you convert cm to m? is it because we want a value closest to a one digit number or? I dont understand
pressure is force (SI units would be N) over area (SI units would be m^2). If he had used cm^2 instead of m^2, it would have given him an inaccurate result.
that is great bro.
Thank you
You’re the best 🤩
really useful
good stuff
Thanks
Thank You..All the best
very good video thanks a lot
Thanku sirr
really good video, I like it!
Good job explaining :)
I love physics so much🥰🥰
Very helpful .Thanks alot.
I hve become so dependent on you that I don't understand things if not explained by you 😅
Thanks
Pls is the pressure in the middle of a container the same as in the bottom or we have to divide the pressure by 2
Pls do reply my question
LIFE SAVER
How did you get 9.8 as the gravitational acceleration?
It's one of those things you gotta remember! Essentially though, you get it from a few experiments. But because it's roughly the same number wherever you are on earth, it's become more practical to memorize it than to calculate it every time.
Nice 👍 video
I want to correct you in the first numerical. You wrote block and further you wrote book .
Nevertheless, your video is the showcase of your efforts.👍🏻👍🏻👍🏻👍🏻
Um, look in the first example what if we take force 150 N since from kg to N multiply by 10..
And the area as 70 multiply by 40 = 2800cm. 2800/100= 28m
So P=F/A
P=150/28=5.35 which is different from ur answer. Whyy??
This is because area is measured in square meters. You have to divide by 100x100 to get from square cm to square meters. NOT 100. Hope this helps:)
I thought the same
70cm * 40cm = 2800cm = 28m
0.7m * 0.4m = 0.28m
?
@@theduckmugnielsen7038 Yes yes yes. Thanks. I just realised. :D:D:D:D
Thanks so much
can i ask how do you find the pressure on top
يارب انك تسلم 🩵
P is not equal to F/A, it is the component of F perpendicular to the A divided by the A.
its implied to mean that
I love you man
thanks a lot I appreciate you,
you are very nice
why dont you plug in 1.7 for g since its the specific gravity of the fluid?
Gravity and gravitational acceleration is now the same
in the last one what happens with the area?
Who else is here the night before finals😊
Me
sir , do we have to use h= 3 m because of the concept : center of mass
at question 2
I don’t understand this. Why ph20= 1000kg ?
Thanks but where hv u got the pressure on no. 1
So if we deal pressure in water, area is disregarded as the first example if the area increases, the pressure decreases. So if i put a 2m x 3m rectangular block at a depth of 20m below water surface and another block with 10m x 20m, the pressure applied to both rectanguar block are the same, is that correct?
please, how long does it take to fill a swimming pool 7.5m times 18.0m with an average depth of 3.5m, if the water flows from a pipe of 1.5cm diameter with a speed of 1.5m/s?
Can someone explain why he made it mg/A and whats mg
Force = mass x gravity
F = m x g , where m = mass and g = gravity
Pressure = Force / Area
P= mg/A
For the last case can someone explain it to me?
In the exercise they gave the specific gravity of the fluid which is equal to 1,7N/m³. And we know the specific gravity(noted gamma) is related to the acceleration(g) by the following formula: gamma= (rho)×g
For the pressure: P= (rho)×g×h thus P= gamma×h
My question is why did he take the density of the water to calculate the pressure if the specific gravity is already given?
Please i'm a little bit confused.
Thanks in advance for helping me
I got a question does force in p=f/a refer to the net force on the object or is it the force in the same direction as in the formula w=fdcosø
Waht.
what software do you use to create your screencast?
am i the only one who don't understand this no matter how hard i try
nope me too😢😢
Yes
Omg same wtf 😭🙏
Shouldn’t the height equal to 4m 8:04
The leff times the whiff?
ghgjftythnhcfchdty? more like zsiedufhseaklrjgnjksbgisdfhuisdfhaskjrbgzsdjhhbsdjfgh
Where did you get 9.8m/s squared? Please explain, some people don’t understand this
If you really listen to your professor you would know that that is an acceleration due to gravity.
9.8 m/s^2 is a constant value for the acceleration of gravity.
It is not constant for other planets in the solar system. They have more mass and have more gravity becoosee of that. That value is only the acceleration of an object in free fall on earth, but is different on other planets
It's because its the acceleration due to gravity
4:03 how did it become N newton?
Idk
kg m/s2 is Newtons
Why can't we use the gravity for on earth 10
hi 3.45 , why is it 9.8m/s2?
Wait a second. I'm confused about the last problem. What about the area? Don't we still need the area of the cylinder since Pressure = Force / Area? Why wasn't area calculated?
the length and width canceled each other out. He just skipped that part
Consider the second example where he derived that formula of pgh
good
Sal Khan is so freaking confusing. JG just relaxes my brain and clears everything up.
who is Sal Khan btw
is he from khan academy
@@rajegaming7210 yes
I don't understand why does specific gravity equals to the density of fluid relative to the density of water. Can somebody help explaining this to me ?
How would u work out the volume
Width * Length * Height
:D
Ok so this has been bothering me a little bit, Ive been getting more into pressure physics and every time I think about the shape of a cone and specifically the tip of the cone I can never think of how much pressure is techinally there because how do you measure the surface area for the tip of a cone. Like with a crossbow bolt tip or the tip of a spinning top. Could you help me figure this out?
That is confusing
@Bill Blogs It did help, I was having difficulties when trying to measure hypothetical scenarios. But yea, I was trying to see if there was some way to determine pressures at the very point of a conical surface without the use of micrometers or calipers. In retrospect my comment seemed a bit confusing now that I am reading it again. Thank you very much, I get stuck sometimes.
@@saberboi1526 integrals with specific heights you want ?
we have an exam tomorrow and the teacher never even mentioned pressure ;-;
How is the book 15kg 🤷♀️
U don't know maths text books
this pressure thing is so complicated
What’s the reference
everything is clear