Physics 15 Torque (6 of 27) What is a Couple?
Vložit
- čas přidán 13. 09. 2024
- Visit ilectureonline.com for more math and science lectures!
In this video I will explain what is a couple and find TorqeA=? TorqueB=? exerted on each end of the rod by 2 forces acted on it in opposite directions.
Next video can be seen at:
• Physics 15 Torque (7 ...
my guy, your videos have helped me since sophomore year in highschool. i'm a sophomore in college studying engineering and still here. you literally never miss, i love you sm
Josie. Thank you for writing. We are glad that our videos have been helpful for you. 🙂
A clear, concise and commanding video.
Awesomw video, I just started learning statics. This helps a lot. Thank you so much !!!
Wow this really helped me understand somewhat what a torque is and fully understand a couple.
Thank you sir ...well explained
Awesome!!!!! This is exactly what I was looking for
Glad you found us.
great video! well explained and concise :)
thank you
Brilliant thanks a lot Sir
You are welcome. Glad you found our videos.
Dude you are a legend
Hello, My question is as follows: If the couple is applied to a ruler that rests free on the table, where will the center of rotation of the ruler be? and if the forces are moved to one side, and not on both sides of the center of the ruler, where will the center of rotation be?
That is a bit complicated to explain in a comment, but since we are planning on making some more videos this weekend, we will try to add some specific videos on couples and forces applied to a ruler. Those will answer all your questions.
Hello, thanks for the answer. I appreciae it. The question becomes more complicated since I feel that the couple nullifies the center of gravity or resistance of the body, and moves the center of rotation of a free body into the center of the couple. Each time I apply a couple (like) movement with my finger on a ruller that freely lie on the table, the center of rotation moves each time to the center of the couple.
It is indeed a mysterious action, and it will take several videos to fully explain what is happening. Planning on working on that today.
@@MichelvanBiezen For me it is a daily problem. As an orthodotist we use the couple in the braces in all dimensions, and the teeth are moving and rotating when applying it, arround the couple's center that locates on the mid couple's axis and not arround the center of gravity. I can send you a PP presentaion that can make it clearer. The tooth is not similar to a beam, it is embedded in a soft tissue. The ancestors of orthodontics biomechanics described different theories but they did not take into consideration the anchorage unit that does not allow the tooth to move in any other place but arround the center of the couple. I'm waiting for the drawings. Thanks
We recorded 5 videos yesterday, and we will begin to publish them when we complete the editing and the producing along with the thumbnails. (Probably in about 1 week). The application to braces is an interesting one. Let me know if the videos help, after we publish them or if you have additional questions. Note that teeth are anchored and thus the torque created will be relative to the point of the applied force, the direction of the applied force and the point about which the tooth will rotate. But in principle it will be the same as the theory we explained in the videos.
Thanks for explaining couple
Could u do one on velocity acceleration diagrams and analysis?
We already have videos on that in the one and two dimensional motion playlists.
Thanks really helped
Thank you! Fabulous explanation! Where are all my women studying mechanical engineering at? Im 19 and I am doing my masters :)
Glad this was helpful. You are doing great, keep it up! Women are definitely in the monority when it comes to sudents studying engineering.
well explained sir
Thank you sir :)
If the couple is 50N m, does this mean the beam will rotate counterclockwise? Also, will it do so about the center point of the beam, or maybe the center point of the two forces?
If the beam is free to rotate then the beam would indeed rotate counterclockwise in this example.
Thank you sir!
Thank you, Sir
You are welcome
Sir. I am from India. Nice teaching 🎉
Welcome to the channel!
Thank you sir , so is a couple is the magnitude of one forces in the couple by the distance between them?
Essentially a force couple causes something to rotate about the point halfway between where the 2 forces act. The magnitude of the couple is equal to the torque they produce which = 2 F x d/2 = F x d as you indicated.
but why do we need it tho? why is a couple?
In engineering we sometimes need to determine the effect of two identical forces pushing against an object from opposite directions.
Thanks so much!!!
You're welcome!
Excellent explanation -especially for those like me, who wish to understand "why is that?".
I guess "circle of a couple" perfectly apply to screwdriver, right? Now what I wonder about (and couldn't find answer anywhere) is, how about "T handle wrench"? Ok, if force is equal on both sides then torque of a couple applies again. But what if forces are not equal? Or, if forces are equal, but not applied at equal distance?
I tried to search for an answer in your channel, but there are just too many videos. Can you please point me in the right direction? Thank you very much and best wishes.
A "couple" requires both forces to be equal (by definition). In your screwdriver example, it would be impossible for both forces not to be equal.
@@MichelvanBiezen Maybe I wasn't clear or I misunderstand the whole thing...
Let's say I wish to unscrew the bolt of car wheel where big T-handle wrench is used. On one side of wrench I'm pulling up (that would be classic wrench torque case), but I can't make enough force. Now my friend helps me by pushing handle down on the opposite side (our applied forces aren't equal).
I know that's not torque of couple (can't be because forces differ) -it's like two wrenches are used on the same spot. How do I calculate the total torque in this case? I assume by adding resulting torque from each side.. but I wish to be sure about that.
Physics is not my profession, I'm just very curious person. Thank you for your patience.
Thank you!!!
Welcome!
Does this apply to moments aswell?
The concept of a moment is different.
Thank you Sir
From Bangladesh
Most welcome
amazing
Glad you think so and that you found our videos (There are over 9000 videos on this channel)
@@MichelvanBiezen damn, I’ll be sure to check them out
I need help with moment and bodies in equilibrium where a plank rests on multiple supports.
Great explanation!
I feel as if a couple if very significant but I cannot point my finger at it. Please can you explain to me if (at all) a couple as some greater significance apart from it's cool properties.
A couple is formed when you have two equal but oppositely directed non-collinear forces acting on a body. A couple will tend to make that object rotate, it acts like a moment.The magnitude of the moment equals the magnitude of one of the forces times the distance between the two forces. Thus bottom line: A couple acts like a moment (torque), it causes the object to rotate, the magnitude of the moment = F x d, and the most interesting thing about a couple is that it doesn't matter where on the object it acts the magnitude of the moment remains constant.
❤
Thank you. 🙂
Awesome
Thanks!
We studied clockwise as positive anti clockwise as negative
Hey bro , pllz don't make us shame. Your book is wrong , but our nation isn't..
Apply right hand rule. You'll see the thumb pointing into the plane is indeed clockwise, hence -ve torque, and the thumb pointing out of the plane will be anti-clockwise, thus, +ve torque.
Well taken from Kenya
Welcome to the channel!
pov: when ur textbook is boring welcome to Michel Van Biezen channel
Thank you. 🙂
you created many videos that answers many questions Im confused, that's strange
Thank you