Physics - Mechanics: The Pulley (1 of 2)

Рет қаралды 806,222

11 жыл бұрын

Visit ilectureonline.com for more math and science lectures!
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.

Пікірлер: 453

@pureskiler69 9 жыл бұрын

i've learned more from you in 11 minutes than i have from my professor in 9 hours. Thank you!

@MichelvanBiezen 10 жыл бұрын

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!

@lujainaakz1630 6 жыл бұрын

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...

@l.bandproud9506 6 жыл бұрын

Michel van Biezen thank u

@infernosm3857 4 жыл бұрын

Thanks, sir!!!

@abdulnaqvi8284 4 жыл бұрын

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.

@infernosm3857 4 жыл бұрын

@@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.

@aaronward9318 9 жыл бұрын

My left ear learned a lot from this video.

@prakashmohite6409 8 жыл бұрын

lol i thought it was just me !

@eirc123qwert 6 жыл бұрын

I would have been puzzled the whole video if I didn't see your comment xD I only had my right one in

@B2utyCookies 6 жыл бұрын

i thought my earphones have broken!

@Lorenzo01179 6 жыл бұрын

I also thought my earphones were broken xD

@newtonpandey3465 6 жыл бұрын

My right 👂 is angry

@zachkennow9638 7 жыл бұрын

Damn this is high quality video for a physics tutorial. Subbed

@Mrfurry618 8 жыл бұрын

Thank you your explanations are very in depth with a simple and easy to follow delivery. Keep up the good work.

@somesmallstuff8647 Жыл бұрын

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.

@MichelvanBiezen Жыл бұрын

Yes, that is the technique we use in the videos as well; look at the whole system as one entity.

@WeR2VEVO 7 жыл бұрын

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.

@nerdguy21 10 жыл бұрын

Really like how you explain simple pulleys. Make my life alot easier

@chainarongjitbunjong851 7 жыл бұрын

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.

@fallenangel3703 8 жыл бұрын

Thank you, You have helped my understanding and with that i have improved my grade significantly.Thanks

@MichelvanBiezen 11 жыл бұрын

You are welcome. Thanks for the comment.

@nimo517 7 ай бұрын

First day discovering the channel. 995,000 subscribers!!! I bet when I come back in a couple days you’re over the mill mark 👏

@MichelvanBiezen 7 ай бұрын

Welcome to the channel. There are 9900 videos, so that will keep you busy for a while. 🙂

@nerotyagi 7 жыл бұрын

sir, your explanations are tremendously good!!! Love 'em. I hope I watched 'em in the beginning of my sessions

@danaabou-khamis9975 2 жыл бұрын

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.

@MichelvanBiezen 2 жыл бұрын

Glad it helped!

@MichelvanBiezen 9 жыл бұрын

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

@xprincy 6 жыл бұрын

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!

@simthandetv9851 6 жыл бұрын

Thank you so much. Repeating the video over and over has helped me a lot!

@MichelvanBiezen 9 жыл бұрын

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

@SarunaAlbahr 8 жыл бұрын

Thanks for your explanation! The detail you added really helped me to understand!

@tinani97 5 жыл бұрын

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

@selene_xoxo Жыл бұрын

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 :)

@MichelvanBiezen Жыл бұрын

Glad it helped and glad you found our videos. They should be a big help for getting ready for the MCAT. 🙂

@Jonathan-vx7xi 3 жыл бұрын

If I could like this video twice I would. Thank you so much Mr Van Biezen for these

@andysmith342 9 жыл бұрын

Video was very helpful, helps an AP high school student more than the teacher does.

@samueloliver5598 7 жыл бұрын

Really good, really helpful thanks for spending the time to do this for us!!!

@jagadishmahato9925 10 жыл бұрын

Great job. Thanks for uploading physics problem solving videos... These videos will be very helpful for physics guys.

@MichelvanBiezen 9 жыл бұрын

Shadd, I believe I made a problem like that.

@user-kd2om5ej9c 7 жыл бұрын

Thank u sir , I understood the problems very well and u explain by easy way 👍

@HasibAlRashid Күн бұрын

i've learned more from you in 11 minutes than i have from my professor in 9 hours.

@masongluth6759 7 жыл бұрын

Very helpful video!!! Thank you Mr. Biezen!

@egemenbalban3789 7 жыл бұрын

Great video! Explained very clearly.

@teohjingyang3082 5 жыл бұрын

I learned a lot!!! Thanks for helping me in the exam!!

@m16biswas45 6 жыл бұрын

Beautifully explained

@jonathanche3722 7 жыл бұрын

Thank you so much! I understand you much more than my AP Physics teacher... hopefully i'll do fine on my test tomrrow!

@lissandro3709 7 жыл бұрын

Jonathan che my words exactly

@flynnkyran 6 жыл бұрын

How’d it go??

@samisiddiqi5411 2 жыл бұрын

It's been four years. Did you pass?

@petertshiamu2136 7 жыл бұрын

beautiful studied for one 3 nights and i got everything that i need to pass my upcoming test thank you

@venukalvakota1262 7 жыл бұрын

I have clearly understood whatever he explained me...now I can do my exam well.

@shreyb1409 7 жыл бұрын

thanku sir...i studied these things like a life ago......kind of nicely refreshed the memory..

@istinugovorim3855 6 жыл бұрын

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 !

@alejandromontague1388 6 жыл бұрын

This man deserves a damn award, saving my grade one video at a time.

@antisymmetric237 Жыл бұрын

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!

@MichelvanBiezen Жыл бұрын

You are very welcome. Glad you found our videos! 🙂

@blaccoon0594 5 жыл бұрын

Thank you sir. You are better than my real Physics teacher.

@suryasarkar87 5 жыл бұрын

thanku sir...love and respect from india...

@MichelvanBiezen 5 жыл бұрын

Welcome to the channel.

@angiebabe94 9 жыл бұрын

Thank you SO much. I can't tell you how much your videos help. It makes a huge difference in my confidence this class.

@deborahtesfaye5551 Жыл бұрын

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

@mravi8or 6 жыл бұрын

This video is exponentially better than the SAT study books I just bought.

@yourlocaltheatrekid900 Жыл бұрын

Thank you so much for this! I completely did not understand the lesson from my teacher, but this video explained it wonderfully.

@MichelvanBiezen Жыл бұрын

Glad you found our videos! 🙂

@kifter4254 5 жыл бұрын

thank you so much. such a good teacher

@virajagarwal4789 7 жыл бұрын

Sir this video is amazing can you make some more videos on ib physics Regards

@samueloliver5598 7 жыл бұрын

Thanks really helpful and well explained !!!!

@user-zg5sz2wu9t 10 ай бұрын

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 ^^;

@MichelvanBiezen 10 ай бұрын

Glad you found our videos. 🙂

@karinaalvarez1889 4 жыл бұрын

Gracias!!!!! Me ayudó bastante a entender el ejercicio!!

@markwu8605 Жыл бұрын

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!

@MichelvanBiezen Жыл бұрын

Glad you found our videos. Good luck on your test. 🙂

@thatoldbob7956 4 жыл бұрын

A very interesting lecture. My question: How would you explain this by the old system? Since you only examine a static condition, the forces in the rope’ s sides while the pulley is not rotating. I spent 60 years in static engineering and I am glad that I got out of it in the right time. One of my daughter is a physicist from Cambridge.

@MichelvanBiezen 4 жыл бұрын

In this example, the pulley is rotating and the masses are accelerating.

@okyemaboagye7592 6 жыл бұрын

Thanks man helped me out a lot

@dhruvpandey4147 8 жыл бұрын

damn entered my left ear and left

@MichelvanBiezen 8 жыл бұрын

+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!

@goodman5836 8 жыл бұрын

+Michel van Biezen lool

@shrddharajput1324 4 жыл бұрын

Entered your ear and left 🤣🤣😂😂

@boggarapulokesh3224 4 жыл бұрын

I was asked bandwidth for same problem but only with single mass. Any idea on how to do it?

@nocontext3843 6 жыл бұрын

Love from India Sir..Superb explanation..

@samanthajimenez8422 5 жыл бұрын

THANK YOU THIS REALLY HELPED

@justinmedia1621 4 ай бұрын

Great teaching understood it in 13 min. Wish my school had a good Physic teacher.

@MichelvanBiezen 4 ай бұрын

Glad it was helpful!

@FoxRiverBridge 5 ай бұрын

What a perfect video for the night before my exam. Thank you so much for this!

@MichelvanBiezen 5 ай бұрын

All the best on your exam.

@Dangote7 9 жыл бұрын

this really helped me!

@zainomar7296 8 жыл бұрын

thank you very much for this explanation

@jayctee9190 8 жыл бұрын

Thank you Sir this really helped me in my Warfare class

@Puterim3 7 жыл бұрын

Thank you sir you helped me alot

@OjasviAgnihotri Жыл бұрын

Thankyou my school teacher sucks so i study from you 🙂👍

@MichelvanBiezen Жыл бұрын

Glad we are able to help with our videos. 🙂

@behindtheslopes3907 Жыл бұрын

Thank you so much! Had a problem like this on Khan academy, the hints and solutions really weren’t helping glad I found this!!!

@MichelvanBiezen Жыл бұрын

Glad it helped!

@marcaroughsecretagent. 10 ай бұрын

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 ❤

@MichelvanBiezen 10 ай бұрын

Welcome to the channel! 🙂

@evanhincapie1442 6 жыл бұрын

Got a physics test on this tomorrow and you saved my shit bro good looks

@PIANOSTYLE100 7 жыл бұрын

Michael thanks for your reply. my phone is this year's ZTE . iPhones may allow changing resolution but as far as I know I can not change the resolution .

@MichelvanBiezen 7 жыл бұрын

We just checked it out on one of my kid's phone and it looks fine on that one as well on the regular setting. And she can increase the resolution as needed. (that is part of the youtube settings and it should not depend on your phone).

@fizixx 7 ай бұрын

Merry Christmas 🌲 thanks for all the wonderful videos and explanations.

@MichelvanBiezen 7 ай бұрын

Merry Christmas to you as wll. 🙂

@fizixx 7 ай бұрын

@@MichelvanBiezen 🙂

@sharanv9182 11 жыл бұрын

Really helped alot, thanks sir

@LuluXin-oo4wu 2 ай бұрын

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

@MichelvanBiezen 2 ай бұрын

Nice work. We try to avoid assigning equations to everything, instead teaching the techniques to derive the equation in any situation.

@LuluXin-oo4wu 2 ай бұрын

@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🙏

@MichelvanBiezen 2 ай бұрын

Best wishes and good luck!

@khairyvisuals3446 6 жыл бұрын

Thank you sir!

@niculagabriel2147 8 жыл бұрын

Good job sir!

@raalf7427 20 күн бұрын

thanks for the explanation

@aireenfitra7562 9 жыл бұрын

thank you sir! 😁😁

@carultch 2 жыл бұрын

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.

@MichelvanBiezen 2 жыл бұрын

Nice comment. Like the insight.

@carloschuecos7014 6 жыл бұрын

Could you do another example where this system is being supported by another pulley son the actual system is moving verticallt

@physicsbyfiziks5798 4 жыл бұрын

awesome explanation

@biancablair6462 5 ай бұрын

YOU JUST SAVED MY PHYSICS GRADE BLESS YOU

@MichelvanBiezen 5 ай бұрын

Thank! You had to do some heavy lifting too.

@matthewmoore7862 7 жыл бұрын

my left ear loved this video

@johnbingham6355 2 жыл бұрын

Thank you so much.If I were not so daft I should have realised that.However, as far as I can see, we always seem to deal with a light string.Well, supposing that under the same conditions, as in the the simple example of 1;2 we deal with a heavy rope of mass m.Could we answer the question by the proportionality within the rope? I have tried this but still fail to find the right answer.

@MichelvanBiezen 2 жыл бұрын

You are so welcome

@rbix404 2 жыл бұрын

its always the old videos, thank you so much

@MichelvanBiezen 2 жыл бұрын

Glad you like them!

@darkseid856 5 жыл бұрын

Sir can you pls provide the solution to the infinite pulley system?

@ArgentumFirst 5 ай бұрын

Sir, Thank you so much for the lesson!

@MichelvanBiezen 5 ай бұрын

You are welcome.

@lollabytaskmaster4586 6 жыл бұрын

what video is before this?

@danielmasunungure 4 жыл бұрын

so good! Thank you

@teresaolim2857 2 жыл бұрын

Would it be solved the same way if the pulley had mass? Thank you so much, this was very helpful!

@MichelvanBiezen 2 жыл бұрын

If the pulley has mass, you need to use a different technique. See this video: Physics - Application of the Moment of Inertia (10 of 11) Acceleration=? When Pulley Has Mass kzfaq.info/get/bejne/is-Km5x1vsCbZGg.html

@cagrzorlukasap2644 6 жыл бұрын

you are the best! love from cyprus!!

@MichelvanBiezen 6 жыл бұрын

For a small island, we have a lot of students watching our videos from Cyprus. Welcome to the channel!

@muhammadnurfirdausbinswand538 3 жыл бұрын

I learn more from this

@htht7831 8 жыл бұрын

Thank you, that helped

@sunilmishra5382 6 жыл бұрын

lovely ..thanks

@denissemedina4619 3 ай бұрын

Great video, thank you!

@MichelvanBiezen 3 ай бұрын

Glad you liked it!

@ayushpatel994 5 жыл бұрын

Thank you so much!!!

@AnandYadav-dc9pf 5 жыл бұрын

Very nice explainer

@maplesap 3 жыл бұрын

Just watched an entire 2 min studypug ad AND clicked the link, cuz you deserve it. Saved my ass

@MichelvanBiezen 3 жыл бұрын

Thank you

@isabellacarson1906 7 жыл бұрын

Thank you so much sir

@lucygrainger4860 6 жыл бұрын

Anyone else cramming some last minute studying before an exam?

@sinclair1082 6 жыл бұрын

Lol me

@lipibanerjee9791 6 жыл бұрын

Lol me

@muhammadhashim5385 5 жыл бұрын

Hahaha

@muhdhafiz2468 5 жыл бұрын

Akuu

@physicsmanodd4491 2 жыл бұрын

i know that the m2g is slow down the systyem acceleration but the definition when we sum the force is force in the same vector need to add not subtract

@MichelvanBiezen 2 жыл бұрын

Because you want to differentiate between which forces are aiding the acceleration and which forces are opposing the acceleration.

@physicsmanodd4491 2 жыл бұрын

Yeah but how it can controversial the definition