Physics - Mechanics: The Pulley (1 of 2)
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- เผยแพร่เมื่อ 19 ม.ค. 2013
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This lecture series will cover Newton's Second Law of Physics: F=ma.
This lecture series will introduce you to the function of a pulley, also called the Atwood Machine.
Problem Text:
A string is placed over a massless and frictionless pulley. A mass of 8kg is suspended at one end while a mass of 5kg is suspended from the other. What is the acceleration of the system.
It is good to see that these videos are peaking your interest in physics and science in general. It does appear that you are re-discovering the principles and understanding them. Good for you!
I wish that you teached me when I was in high school, I always loved physics but my grade are not that good, but now thanks to god that I know your channel...
Michel van Biezen thank u
Thanks, sir!!!
Your teaching is excellent but I do have one question, why did you make the gravity positive? I would have made the gravity negative because its going downwards, but it would give me the wrong answer.
@@abdulnaqvi8284 Because gravity itself, fundamentally, is a DOWNWARD force. (As it *PULLS* objects toward earth)
So the positives value will always be downwards, and negative value will be upwards because it is against gravity.
Hope u get it, correct me if I'm wrong.
i've learned more from you in 11 minutes than i have from my professor in 9 hours.
Thank you!
My left ear learned a lot from this video.
lol i thought it was just me !
I would have been puzzled the whole video if I didn't see your comment xD I only had my right one in
i thought my earphones have broken!
I also thought my earphones were broken xD
My right 👂 is angry
Damn this is high quality video for a physics tutorial. Subbed
it is pretty nice to see that you are still replying to comments considering the fact that the video was uploaded 9 years ago! I am generally solving these questions by turning these two masses into one body and finding the acceleration from there.
Yes, that is the technique we use in the videos as well; look at the whole system as one entity.
Thank you your explanations are very in depth with a simple and easy to follow delivery. Keep up the good work.
First day discovering the channel. 995,000 subscribers!!! I bet when I come back in a couple days you’re over the mill mark 👏
Welcome to the channel. There are 9900 videos, so that will keep you busy for a while. 🙂
Extremely helpful video, Mr. Biezen. Very clear and I appreciate how you solved algebraically before plugging in values; I usually define my formulas and jump in plugging numbers.
Really like how you explain simple pulleys. Make my life alot easier
Why this tutorial did't come when I was young. I'm now learning together with my daughter from your tutorial. It's very useful. Thank you.
Thank you, You have helped my understanding and with that i have improved my grade significantly.Thanks
this saved my life from a high school teacher that doesnt know how to teach properly, basicaly a self tought class. This helped me very much thank you!
sir, your explanations are tremendously good!!! Love 'em. I hope I watched 'em in the beginning of my sessions
Thank you so much. Repeating the video over and over has helped me a lot!
Video was very helpful, helps an AP high school student more than the teacher does.
Thanks for your explanation! The detail you added really helped me to understand!
Thank you, Sir! This was great. I had two physics teachers that tried to explain this to me and they made it so complicated by subbing equations into each other. You made it so easy and I have a test tomrrow.
Glad it helped!
You are welcome. Thanks for the comment.
Wow this video was God sent! Someone recommended this video in an MCAT practice question thread and this just explained everything so well. Thank you :)
Glad it helped and glad you found our videos. They should be a big help for getting ready for the MCAT. 🙂
Faisal,
At first only using variables (and no numbers) may look strange and confusing.
But it is the best way to learn how to solve problems in physics.
I recommend that you learn this technique, because in the long run, it will greatly improve your ability to solve physics problems.
Just take it one step at a time and make sure you understand each step before going on to the next step. After giving it some time it will make sense
beautiful studied for one 3 nights and i got everything that i need to pass my upcoming test thank you
Dear lord, I was trying to figure out how to answer a problem, surfed for an hour and half, and you helped me. THANK YOU !
Great job. Thanks for uploading physics problem solving videos... These videos will be very helpful for physics guys.
Suvrath Hegde
Sure. It makes everything a lot easier. If you are just trying to understand the concepts or show that you know how to solve a problem 10m/sec^2 makes it much simpler. But when the "exact" answer is asked for you must use 9.8 m/sec^2
Really good, really helpful thanks for spending the time to do this for us!!!
thanku sir...love and respect from india...
Welcome to the channel.
Beautifully explained
I wish my professor would teach these concepts straightforward like Biezan, he does it in like 10min too. My professor just explains how the equations are derived and has us do practice questions as HW, without actually doing at least one problem to show us how its done. Going though step by step of how to solve physics questions in these videos helps me understand more and gives me hope to pass my physics class
If I could like this video twice I would. Thank you so much Mr Van Biezen for these
thanku sir...i studied these things like a life ago......kind of nicely refreshed the memory..
Great video! Explained very clearly.
I have clearly understood whatever he explained me...now I can do my exam well.
I learned a lot!!! Thanks for helping me in the exam!!
Very helpful video!!! Thank you Mr. Biezen!
Thank you sir. You are better than my real Physics teacher.
Thank u sir , I understood the problems very well and u explain by easy way 👍
Thank you so much! I understand you much more than my AP Physics teacher... hopefully i'll do fine on my test tomrrow!
Jonathan che my words exactly
How’d it go??
It's been four years. Did you pass?
This video is exponentially better than the SAT study books I just bought.
I love to learn physics specially when mathematical equations are involved. You do such a great job at that. Thanks you for sharing the knowledge!
You are very welcome. Glad you found our videos! 🙂
Thank you so much for this! I completely did not understand the lesson from my teacher, but this video explained it wonderfully.
Glad you found our videos! 🙂
Thank you SO much. I can't tell you how much your videos help. It makes a huge difference in my confidence this class.
I was very stressed out bc I thought I would fail my phy final exam...u make it alot easier to me I rly appreciate ur cooperation Mr u saved my life...we need more videos like this with simple explanation.honstely I wish u were my physics teacher. Tnx again
Love from India Sir..Superb explanation..
Great teaching understood it in 13 min. Wish my school had a good Physic teacher.
Glad it was helpful!
Gracias!!!!! Me ayudó bastante a entender el ejercicio!!
This man deserves a damn award, saving my grade one video at a time.
thank you so much. such a good teacher
Shadd,
I believe I made a problem like that.
Thanks man helped me out a lot
Thanks really helpful and well explained !!!!
What a perfect video for the night before my exam. Thank you so much for this!
All the best on your exam.
THANK YOU THIS REALLY HELPED
YOU JUST SAVED MY PHYSICS GRADE BLESS YOU
Thank! You had to do some heavy lifting too.
Thank you so much! Had a problem like this on Khan academy, the hints and solutions really weren’t helping glad I found this!!!
Glad it helped!
Thank you, this was super helpful!! was browsing the physics forum for ages trying to figure out how to solve a standard pulley problem and this explained it so simply instead ^^;
Glad you found our videos. 🙂
Thank you sir.Your lecture is the savior.I really hate my physics teacher and like a rubbish.Thank you so much for my physics test!
Glad you found our videos. Good luck on your test. 🙂
this really helped me!
Good job sir!
Thank you Sir this really helped me in my Warfare class
thank you very much for this explanation
Really helped alot, thanks sir
Sir, Thank you so much for the lesson!
You are welcome.
I learn more from this
you are the best! love from cyprus!!
For a small island, we have a lot of students watching our videos from Cyprus. Welcome to the channel!
Thank you sir you helped me alot
awesome explanation
Merry Christmas 🌲 thanks for all the wonderful videos and explanations.
Merry Christmas to you as wll. 🙂
@@MichelvanBiezen 🙂
Thankyou my school teacher sucks so i study from you 🙂👍
Glad we are able to help with our videos. 🙂
its always the old videos, thank you so much
Glad you like them!
Great video, thank you!
Glad you liked it!
damn entered my left ear and left
+Dhruv Pandey
Sorry but our early video are for left-ear only. Then we discovered we could make our videos for left- AND right-ears!
+Michel van Biezen lool
Entered your ear and left 🤣🤣😂😂
thank you sir! 😁😁
Very nice explainer
Wow sir you are the best, I had a different question from this one but I found everything right...the tension I calculated is balanced thank you I just subscribed ❤
Welcome to the channel! 🙂
Thank you sir!
lovely ..thanks
so good! Thank you
I finally understand this topic
Glad you found this video. 🙂
Very clear explanation from Papua new Guinea
Glad you think so! Welcome to the channel!
Mind expanded thank you 🙏
Glad you found our videos. 🙂
Thank you, that helped
my left ear loved this video
Thank you, sir!
You are welcome. 🙂
There is a formula for this type of question which is actually a derivation.
Here the mass of object 1 should be greatest than mass of object 2 (m1 > m2) and should be in Vertical motion
For acceleration
a = [(m1 - m2)÷(m1 + m2)]×g
For tension
T= [(2m1m2) ÷(m1 + m2) ]×g
(I mentioned in magnitude)
If m1 = m2
Then
a=0
If i am wrong correct me
Nice work. We try to avoid assigning equations to everything, instead teaching the techniques to derive the equation in any situation.
@MichelvanBiezen Sir, it's actually very helpful. Your way of teaching is great and beginner friendly too and you explain the concept crystal clear.I really appreciate it.All I wanted to convey is that if direct formula and tricks are given it will be helpful for students appearing in competitive exams that's it. And Sir, I have been watching your videos for a long time and it really helped me to ace my exams😊. Thank you so much. Wow it's been 11years and you still reply. Hats off
And I am going to attend an entrance exam. Wish me luck please🙏
Best wishes and good luck!
very nice
In college physics, this is amazing. thank you.
You are welcome. Glad you found our videos. 🙂
What a quick reply
🙂
Just watched an entire 2 min studypug ad AND clicked the link, cuz you deserve it. Saved my ass
Thank you
We call it Atwood's machine because Mr Atwood came up with this machine for the purpose of slowing down the acceleration of gravity, so that it would be practical to measure it accurately when subject to human reaction time. He also used it as a way to experimentally verify the constant acceleration kinematic formulas.
Nice comment. Like the insight.
Thank you so much sir
Thank you so much, you saved my test grade
Good luck on your test.
Thanks man
Thank you so much respected Sir.
Glad you found this video helpful. 🙂
Thank you so much!!!
your great bro keep it up
Thank you. We will try.
nice video
thanks sir
Sir this video is amazing can you make some more videos on ib physics
Regards
Got a physics test on this tomorrow and you saved my shit bro good looks
Thank you so much sir!!!!!
You are welcome. Glad it was helpful. 🙂
Thank you!
Thanks!!
Welcome!