Finding torque for angled forces | Physics | Khan Academy

[@joshuagabriel9774]

Dude I swear this snarky, super simple, and casual explanation of torque was exactly what I needed right now

[@BANANACHAD-]

I'm so happy that Khan academy actually exists it saves a lot of time by making such lengthy explaination simpler.🙌🏻🙌🏻🙌🏻

[@fatmaabdullah9714]

Very true.

[@Aya-wv3rt]

I was soo confused about how to deal with the angles. Thank you for this clear and concise explanation!

[@mozaffarhossain8198]

I just love david probably more than sal.

[@Nothing-ui7pj]

Why cant teachers make it that simple ? good explanation

[@fatmaabdullah9714]

Seriously. They unnecessarily complicate things.

[@ryecustard7687]

Nothing I take ap and my teacher brushes past everything so quick so its hard to pick up the information if you’re not paying attention

[@anirudhhakrishnan]

Awesome explanation. Very helpful for students

[@KevinHeven]

He’s my teacher

[@xenahollins962]

I cried tears of joy after watching this. Omg I finally understand!!! I may just pass my final lol

[@misternobody4644]

Xena Hollins Congratulations, warrior princess!

[@MaricelaPotoc]

You saved my day :) My head hurts from searching for a good explanation in Romanian a whole day! I am really glad that I finally got it. Thank you very much!

[@ksmrafi4150]

Not romanian

[@jsmith6965]

Wow!!! My professor explained this so much more difficult. Thank you!

[@fatmaabdullah9714]

I always had problem making out as to which angle to take and what perpendicular.Thankfully, such simpler explanations do exist.

[@kattamanasa1254]

David u r the best 👌, I have come across so many videos on torque but didn't really like them but your explanation is clear and the most imp your voice is perfect 👌

[@tiger648]

I understood this perfectly. Great explanation! Definitely helped me out because I'm behind asf.

[@lifeinoman4500]

David is so good at explaining anything like this🙃

[@rownitasheikh8343]

david sir; you are one of the best physics teachers in the world.......

[@nnennaagidi]

David or sal?? All I know is that khan academy is awesome 😎

[@anastasiaanautodidact9856]

Long story short: Khan academy is irreplaceable

[@natallyagnesia3097]

omg thankyouuu this really helps me A LOT 😭💛✨

[@SwaggerJoyce]

Ur voice is so clear thank god

[@mythslife8883]

You're an amazing Teacher 🌸

[@user-eb7zo1cq2l]

Thank you so much for explaining it so clearly!

[@cowgate]

Whats the point of me going uni? I may as well watch your vids, sit my exam and pass!! Thank you so much!

[@geraldinethomas463]

best video on this! Thanks so much!!

[@nurnajiihahbintishahimi9439]

Good explanation you’re the reason why I understand this !!!

[@AliciaKeys642]

your explanations are a lot better than sal , godd bless uu

[@andrewdupree8947]

How do you know which side to take the angle of when you do the tail to tail method?

[@MillionMovieClips]

Or you can simply find out Perpendicular component of force by F sin(theta)= 10sin(30) which will give you 5 N.

[@cameronwarttig1732]

I'm being taught moment arm isn't the same as length unless it's 90°. I'M JUST MORE ANXIOUS NOW

[@ommprakash4816]

What do you mean by length , the length from axis to the point of force?

[@KevinGarcia-cw8ut]

Teachers teach this by Powerpoints.. they dont even help Thank YOU! Khan Academy

[@virupannamedikinal]

Thank you so much

[@meatmissile8229]

I was confused for a little bit but I guess one of the main points is that if the force on the door points towards the pivot rather than away from it, you will have a larger angle to use to calculate.

[@prettyCassey02]

This is exactly my problem! I don't understand and can't comprehend how to draw a perpendicular line that hits the axis of rotation with these weird angles!

[@vanessasingini1571]

Thanks can solve this now

[@aleenafatima8114]

how do we know when to apply Fdcostheta or Fdsintheta (mechanics)

[@sumayyahaisha2068]

this was really helpful! :)

[@Ami_S]

Umm.. I really liked how you did it and I prefer it your way but I have seen people wher ethey take radius perpendicular which doesn't make sense. I mean torque depends on the force perpendicular and the distance between the point of application and axis of rotation. But, many times, professors take moment arm, or the perpendicular distance to the force. I am not sure how that would work out. Could you clarify

[@ronakgahlawat1247]

Thank you

[@yuiioxoxx]

amazing! thank you so muchhhh!

[@chrissebastian4620]

hey great vid it helped for my dream job which is AVIATION ENGINEERING so thanks but I just wanted to ask about the axis is there always a axis because imagne you threw a gust of wind right on top of the car at the front it would make the force go up but the angle of shape also matters because the of a car glass at the front is like / this so it would go up but even if it went at the bottom it would go up due to the horsepower and aerodynamics of the sonics but anyway 🙏🏼 thx.

[@stathiskapnidis9389]

is there any case where i have to use Cos instead of Sin?

[@mohammadsayem3370]

Yes, usage of sine and cosine depends on the angle respect to the axis; if the angle is with respect to the Y axis, then you can use sine, similarly, if the angle is with respect to the X axis, you could use cosine.

[@JohnPaulHabib]

why when I try doing 20cos30, it doesn't work? Rationale that the vertical component of the force is to the right of the green arrow, so i could form a triangle there and use cos30? or is it only sin that works in these questions?

[@ryanzuppardi6242]

if you want to use cosine for that problem you would need the cosine of 60, not 30. It depends on if the angle is measured from the horizontal axis or the vertical axis. Had this angle been measure from the vertical axis(perpendicular to r) then you could have used cosine of 30.

[@Shambo271]

Thank you! Children, daddy just learned something cool!!! Let's get smarter.

[@HoangNguyen-pw2ct]

Great job! thank you so much

[@1992Dadi]

Thanks for the cool video !!!!

[@extrafreshhh]

I like to use COS(the angle of difference from the perpendicular force vector)

[@primaasnsnhope]

What is the direction of torque in the 2 examples?

[@juanamaria5452]

Thank you. Why must a teacher give you 1+1 example equation and give you √586raise to 18th power over 81 times whatsoever in an exam. Gods in heaven.

[@samirm9097]

Im aiming for 5nm dynameter so how much angle i need to properly tighten the bolt. How long my wrench should be. Ans shoot how d i use my hand shall i push it at certain angle. How do i get a reading of my hand Fr torque

[@raijinthunderkeg1580]

Thanks!

[@Dr_Asma_physio]

Nice explanation.....

[@antiawarenessawarenessclub]

Thank god for youtube. My textbook sucks

[@wejustwannajam]

Phenomenal!

[@Magjn]

What program are you using to do this?

[@YourLifeWasting]

until you realize its a sliding glass door lol great vid studying for tomorrows test

[@aristone-tekeste7291]

This video cleared up a whole lot for me. Thanks 💯

[@angelinelina2922]

Who is David and what other subjects does he teach? can he teach more

[@monicasantos3765]

Nice job explaining this. The text book my daughter is using is useless, it doesn´t give enough examples.

[@mohammadsayem3370]

Use Giancoli Physics Sixth Edition

[@emilyjohnson8650]

why do you break the first one into components but not the second one?

[@kookeuphoria8069]

Me who watches this video when i just finished my exams.....Why did i not find this channel before???😢

[@joshualanders834]

Youre the only reason im passing

[@alrafiabiralrafi2489]

I learn how to make a easy task hard (perhaps funny & logical) towards learners.

[@CAQM3737]

How can I calculate the angle of a seesaw when two masses are different? Let's say 10 kg one side and 15 kg the other? What is the resulting angle? If distances are the same.

[@jrd5082]

I think seesaw doesn't need an angle because its force(mass×gravity)is already perpendicular to your "r" or distance,, or it has an angle, 90° and sin90=1, (not sure tho~)

[@CAQM3737]

@@jrd5082 . Tnx. In my question we have two different masses. We will have an angle.

[@B2T7RID2QGLEHH5UZFB0T]

Hmm. Seems like going backwards you would use torque to find the inertia of a mass on the lever arm which is what I'm trying to do

[@fahidch8190]

why r we using angle 120 if we use 60 degree?? anyone help me??

[@kanisaeed3139]

Someone tell me how the extensions is determined it’s so confusing

[@SherWayne98]

Why then whenever i multiply 10N by sin(30) i get -9.8 not 5

[@NayaniDhanushka]

Why can't our teachers be like this?

[@viktorravnjak9413]

why complicating with angle 120, when we can use 60?

[@Sethclement96]

i guess 120 would be the "proper" way of finding it, but since they're supplementary it doesn't matter. He's just giving you the choice and letting you know iI assume

[@rafianajam9157]

Is there any case we can use cos in the formula?

[@veer7431]

Forget this Imma just fail in life Soo its alll goood😭

[@geraldinethomas463]

you can figure it out!

[@newtonalbertson7014]

GOATTTT

[@mylecturesonlineclasses4923]

👍

[@EXILEvenom]

I graduated too early...

[@starcraft2casts476]

Why did you make it more complicated. You can use 60 degrees...............

[@fresnel5594]

kinda sounds like lightning mcqueen

[@PasajeroDelToro]

There's more to it than the diagram indicates. Much more... imgur.com/a/7EZjmYp

[@DubiousDoggo]

nice but please get a pop filter

[@sakthivelannaamalai3794]

Is it too late to make 'Twerk' jokes now??