How Levers, Pulleys and Gears Work

Watch the bonus video on hydraulic systems here: nebula.tv/videos/the-efficien...
⚙️ This video explores different methods that can be use to amplify a force, and focuses on three types of machine - levers, pulleys and gears. The amplification of a force is called mechanical advantage, and it is useful for a wide range of applications, like lifting heavy loads.
---
Many thanks to sheffrator for the treadwheel crane model - "Treadwheel Crane" (skfb.ly/ooIOq) by sheffrator is licensed under Creative Commons Attribution (creativecommons.org/licenses/b....
---
If you would like to support the channel, please consider becoming a Patron - / efficientengineer .
This will allow me to create more high quality videos covering a range of engineering topics.
---
The Efficient Engineer is a channel aimed at mechanical and civil engineers. The mission is to simplify engineering concepts, one video at a time!
Follow me on Twitter: / efficiengineer

[@TheEfficientEngineer]

Thanks for watching! Let me know what you’d like to see next in the comments. And don’t forget you can watch the bonus video on Hydraulic Systems over on Nebula - nebula.tv/videos/the-efficient-engineer-understanding-hydraulic-systems.

[@SirprofMagic]

Thanks once again. A video on how things like pumps, dams, weirs and water treatment plant plant works will be equally great. Your work is really helping.

[@physicslover1950]

I would like to see a never before seen video on enthalpy... Why we always use enthalpy in majority of our thermodynamic calculations and formulas? How enthalpy is different in liquids solids and gases...? Enthalpy is a very very confusing topic in thermodynamics... The formula that Enthalpy = Heat ( Thermal Energy) + PV ( pressure volume product) is actually super confusing for most of us (thermodynamics students) all the teachers have failed to explain this concept especially when this concept is applied in Joule-Thomson Expansion .... Websites , books, teachers and even the Professors say that Joule Thomson effect is an isenthalpic process.. However they really fail to properly and intuitively explain this... the confusion arises form the fact that a sudden compression or a sudden expansion is always refered to as an adiabetic process before one reads the Joule-Thompson Effect ... They say, " Joule Thomson Effect is not isentropic (reversible adiabetic) or adiabetic though there is a sudden expansion; it is an isenthalpic process" Another confusion arises from the fact that isothermal compression and isothermal expansion is always isenthalpic.... Because as soon as the pressure increases it will dissipate heat and as soon as the pressure decreases it will absorb heat from the surrounding ... But if we look at the Joule Thomson effect it is not isothermal the temperature drops and most unfortunately what ruins everything is that sometimes temperature increases as a result of sudden expansion 😵 ..... So we still can't apply the adiabetic logic here because according to adiabetic principle gases cool on expansion while gases are also weirdly heating up on expansion.... Why is this so.... ? Can you please explain what happens at the molecular level? ( animations or simulation on microscopic scale )

[@the_deepjyoti_dhar]

I would like to see videos on friction (and its applications) and principles of virtual work.

[@thabanglemphane6426]

please cover topic of Waves

[@DrZygote214]

I request Bearings, Seals, and Valves. Very important to know how those work and how they wear down, and what sort of abuse wears them down quicker. For example an unbalanced rotating mass can damage the bearings.

[@JesusMartinez-zu3xl]

while most people are out on Friday night i'm here watching these videos. I finally understand mechanical advantage! Thank you!

[@overwhelmingconundrum4327]

Amen

[@ivoryas1696]

@JesusMartinez-zu3xl You _are_ never done learning, after all!

[@clark9614]

As a ME student that hasn't taken statics in a while, this was a great refresher!

[@johnner8577]

No I wasn't stop lying

[@bmffafo5004]

@@johnner8577 "It"

[@N-methyl1phenylpropan-2-amine]

We didn't study gears in statics

[@samb.7395]

this would be covered in dynamics

[@sipanaskar14]

Please make more videos, I love them watch all of them! Great work as always

[@TheEfficientEngineer]

Appreciate it, thank you! Always working on more, it just takes time! 😅

[@jackwanraheem4089]

@@TheEfficientEngineer I helps me alot. BTW, Tomorrow, I have applied mechanics exam.

[@shubhambohra3546]

@@TheEfficientEngineer you are doing great work .please make more video on FEM

[@johnner8577]

Stop lying

[@FreethemGuyz]

I'm only here to learn how to hip throw someone thru a window

[@Exist64]

I am so eternally grateful for this channel. I will become a patron once I graduate and stop being poor.

[@blackkats100]

This is by far the most concise explanation of these concepts I have come across. Excellent work, thank you for the information!

[@josephlai9759]

Thank you for sharing. The animation is so wonderfully done. It made understanding the subject so much easier. And the logical progression of explaining from lever to pulley to gears is extremely clever and well thought out. This must have required a lot of imagination and fore thought.

[@mgh-channel]

This is now the best channel that I have watched in KZbin in terms of explaining engineering concepts and clear animations. I've almost watched all the videos in this channel. Thanks and keep it coming.

[@hagenherrmann8204]

These are next-level animations paired with top notch explanations. Thank you for this most excellent refresher and keep up the great work!

[@martyjoseph9507]

One of the best explanations I've ever seen, covering many questions at once

[@Danish_Raza7]

I am a graduate mechanical engineering I have been preparing for PG entrance exam of Engineering. Believe me!! You will never find this level of animation anywhere.....!! I mean seriously...... classical mechanics with such an perfect examples and articulate animation!!! May Allah bless you and except your efforts!! Love and Respect from India

[@mayurdahiwale5907]

Can't agree lesser! This guy is a legend. Btw, i am having the same credentials as you, preparing for higher studies

[@reddaxtor5662]

What exam are you preparing for?

[@mayurdahiwale5907]

@@reddaxtor5662 Graduate Aptitude Test in Engineering, aka GATE

[@chromiyum6849]

@@mayurdahiwale5907 all the best to both of you

[@ivoryas1696]

@Danish_Rasa7 Heh. Based. Keep at it dude. 👍🏾

[@mrm0nty550]

This video would've been so useful back in my hs days. The information was delivered in a very easy to understand and digest manner. Great work

[@ziaddagher4084]

You are doing GREAT work these videos have immersuable value for everyone watching them, it is a joy to learn engineering with this kind of quality content to support the classroom, on behalf of every aspiring engineer Thank You

[@justadude8716]

I was confused by pulleys and how they work and your video made everything clear to me!

[@JCtheMusicMan_]

A gear can also be seen as a wheel of levers where the moment is at the center of the gear and each tooth is it’s own lever. Great video! ❤

[@RuffGardens]

That is very true thanks for that.

[@ScienceDiscoverer]

Yea, I was always imagining them this way too. Imagine that each tooth is a lever with both sides of it equal to each other, but 2nd lever is shorter. And you act with one lever on another.

[@francoisl7663]

It's been so many year's since I've graduated. Your videos are so helpful to refresh high level conceptual concepts. Thanks

[@shubhamraj1881]

All your videos are gold. It not only bring concept and knowledge, but also develops more interest which is most important thing.

[@golmaal07]

As a mechanical engineering student I really love your videos. I appreciate how you include every minute details in your video. They way you explain the concepts is phenomenal. Only thing that bothers me is the frequency of your videos which come in Months.

[@butterlordbutter]

I love watching these videos to refresh my knowledge of mechanical engineering

[@lancemonarch5905]

Informative, concise and simple thank you so much ❤

[@nicolasperezmaestri550]

Every time I see a notification of your channel, I smile. I think I'm in love.

[@heflumproduction2110]

Me to

[@dtcarrick]

As a Physics teacher I wish I could buy you guys a pint - These animations are perfect!

[@Ma1ne2]

I can't put it differently, your videos are art!

[@arktessellator_10]

Love the way you gave the intuition for how energy is the same even if mechanical advantage increased with example of lever

[@kevin42]

Your content is frankly outstanding. Truly outstanding. And i've only given out such high praise a dozen or so times in the 21 years i've existed.

[@stephaniehitchcock]

This helped me so much, I am currently studying for technology and when it came to pulleys the teacher’s stuff was so vague and didn’t even explain it. Now I know it so well. 👏🏼👏🏼👏🏼👏🏼👏🏼

[@Aoyuki974]

All your videos are really great to watch and are still understable, thank you !

[@danyjr]

Every time you post a video, I get so excited. Your videos are excellent. Thank you!

[@SomeoneUDont]

Brilliant! Please do more videos, you are very professional. Thank you!! Will recommend to friends

[@qadimonotheisttheasian24]

Please make a video on surface tension, your videos are easy to understand and less time consuming. Appreciate your efforts man, good luck!

[@rahulprajapati4638]

Please make more frequently videos , learnt so much from all of them , Love from India 🙏❤️❤️💙

[@sohan5170]

summary of mechanical principles. love it. thank you

[@josammarenye4021]

I love how gears amp up speed in a given period of time. They're the reason I fell in love with cycling 😄 It's a great video

[@ruatarengsicolneyrengsi8924]

Very clear exposition. Thanks.

[@fadoobaba]

As always, excellent for interview / viva preparation!

[@vishalaswathamaa37]

this is exactly what I wanted to watch!!! surely an educational advantage your videos are😇

[@johnl4885]

Since you asked... Optimizing efficiency in an electric motor power drive would be a nice addition. What are the tradeoffs for using flywheels to store energy? Heat loss minimization? Your approach to pulleys, fulcrums, and gears is great.

[@BBBarua]

Thank you so much. That was very helpful .

[@jujitzujesus]

I absolutely love this! The animations are super helpful and allow me to wrap my head around the concepts much more efficiently. I can be a little slow sometimes, so your work is much appreciated 😁👍 I just subscribed and look forward to learning more about my favorite subject. Thanks for sharing your creativity, ability to teach, and overall mad skillzz with the world!

[@johnner8577]

No you didn't your lying

[@TantalumPolytope]

@@johnner8577 *you're

[@SirprofMagic]

Great work as always. Thanks so much.

[@curiash]

Please 🙏 post regularly, your video's are dope!

[@royelhajj2612]

Amazing video! Must take alot of time to develop, keep up the hard work !

[@tedfisk1211]

Very interesting. I like that you explained clearly and allowed time to think and consider between each explanation.

[@brandonbarker7817]

I just purchased a subscription at nebula. wish there was a way to give you credit. I watched the hydraulic video and followed. I'm a beginner machine mechanic at a plant so the way you layer out theses videos was perfect.

[@robgrune3284]

excellent tutorial to introduce the concepts

[@hereiam5192]

Everything in your videos is perfect 💯

[@andreabianchini53]

After watching this video I suggest to take also a look to the Chevrolet videos about spinning levers and differential and the circle is finally complete!

[@aa16121978]

Beautiful explanation

[@yafidrestaadiwiradikna4163]

Your explanation is 1000 times better than my physics teacher! Good luck

[@user-ed9lk7ge5x]

😂😂😂

[@viveksrivastav3962]

Beautiful presentation

[@CrookedSkew]

Superb explanations!

[@viveksinghrana1441]

Good 👍 really helped me for my research for our bridge mechanism

[@anandbavkar8572]

Most Excellent Video. Thank you very much!!

[@MarioGonzalez-cu4sf]

I LOVE THE WAY THIS VIDEO IS DESCRIBED AS IT IS SHOWN IN TGIS COLORFUL EASY TO UNDERSTAND ANIMATION. THANKS . HAPPY NEW YEAR.

[@swapnilpupulwad9445]

Very nicely explained. Thank you

[@amalgam7946]

Thoroughly enjoyed , Hoping for more videos 😍😍

[@renegade1520]

Great explanations.

[@wassupjg]

Brilliant explanation dude 👍

[@abhinav3325]

Your videos are very helpful. Please make more videos. 👍

[@viniciusdegois5986]

I love this channel! please continue!!!

[@timeagain7153]

Your presentation is fantastic

[@gaeb-hd4lf]

This channel is just golden

[@_spartan11796]

Fantastic video as always!

[@tribby3d]

Great animations! Thanks for sharing!

[@theblackrockwolf3543]

Thanks, I realise I was really missing some common knowledge on this. I more or less understand how lever action worked even if I didn't know how the math worked out but I didn't understand the other 2.

[@harishdewangan3711]

Wow ,very nice ,i am very exciting to watch this one , Need metallurgical advantage video with super alloys

[@Peterroberts120]

I'd like to see a video on sizing pneumatic rams, and how to work out the best place to position them, and the forces involved.

[@TheRr1990]

Excellent illustration 👍

[@bhushanmore310]

Thank you for this video this help me a lot.

[@govindaadalinge8759]

I am in the love of your videos 😍...Kindly make more videos...

[@mariocesarsousa]

Perfect video. Thanks💚💚💚💚

[@nicolasramirez3944]

Wow dude, this episode looked straight up beautiful.

[@JohnSmith-wg7yf]

damn, i didint think i would learn some applicable information here. nice, that rope levering system makes total sense now.

[@ranbenayoun1978]

Hey! Great videos, enjoy them a lot. Can you make a video about screws and springs?

[@harley6659]

Duuuude! I’ve been wondering where you’ve been. Love your work

[@vipindas1]

Amazing video

[@7anashMalaysia]

Thank you for making feel less stupid. I never understood when my lecturer tried to explain it. But now it's clear to me.

[@physicsnotesa.k.s5369]

EXCELLENT WORK

[@brendonl9755]

I truly appreciate all the work you are doing, thank you. I am also really interested in learning how to animate after watching your work, could you tell what softwares do you use to make your videos? Anything besides Blender? After effects? I am completely lost

[@md.aburaihan8650]

I am grateful to you forever.

[@mubarakabbas5464]

My favorite channel. It's been a while

[@Ankmehra92]

Great video as always!

[@NoMatterWhat279]

Excellent,thank you ✌️

[@oprophetisfake9482]

Fascinating stuff.

[@mathoph26]

amazing content and videos, thank you

[@user-jb4bw2hj4y]

As usual, i hit the like button before watching the video because I know what I’m about to watch 👍🏻👍🏻👍🏻

[@sankhadipdev5768]

please make a video on TENSOR'S and why normal stress and shear stress cannot be added vectorially

[@Ahmad_Darweesh]

Great work as always♥️♥️♥️♥️

[@josegegas]

Great video, thanks! I would have briefly mentioned the difference between static and dynamic force at the end of the vídeo, as a bonus:)

[@samh5550]

​ @The Efficient Engineer please consider making a course for using blender for education content. I know there is a lot of blender courses and videos, but you are directing the software strength in a very specific way that is not mentions among the other videos.

[@pravinakolkar2530]

Thanks for best video.👍👍👍👍👍

[@pushendrapatel5500]

Please Please please make such more and keep it up. You are 👌

[@Good0Music0for0you]

Amazing , thank you

[@btbb3726]

Nice video! Thank you.

[@sher.5027]

Just came here to tell the algorithm that this video is very good, please make this video viral.

[@rahulshah1098]

Enjoyed watching true masterpiece 👌

[@yousefmostafa4645]

Finally you uploaded a video❤️

[@piarchnick50]

Sería realmente genial comprender como el mecanismo de 4 barras genera ventaja mecánica

[@sanjaypathod628]

Thank you so much U r doing excellent work for learner I m a lecturer in mechanical engineering I always show your video in my class and share with students Plz make more videos i.e. Gear and gear train Governor Gyroscope Balancing Dynamometer Mechanisms in theory of machine In manufacturing process Metal working process Casting process Working of power plants Thermal Hydro Nuclear

[@johnner8577]

Wow this was class to watch was told to watch it can't not recommend enufff👍👍👍👍👍👍👍👍👍👍👍