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Finding torque for angled forces | Physics | Khan Academy

November 9, 2019


  • Reply Sumi Aisha October 26, 2016 at 10:27 am

    this was really helpful! ๐Ÿ™‚

  • Reply Nothing November 12, 2016 at 8:45 pm

    Why cant teachers make it that simple ? good explanation

  • Reply ROWNITA SHEIKH December 21, 2016 at 7:16 am

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

  • Reply Ari Stone-Tekeste March 9, 2017 at 11:11 pm

    This video cleared up a whole lot for me. Thanks ๐Ÿ’ฏ

  • Reply flowergyal March 12, 2017 at 12:12 am


  • Reply Hoang Nguyen May 11, 2017 at 6:35 am

    Great job! thank you so much

  • Reply Maricela Potoc July 5, 2017 at 11:54 am

    You saved my day ๐Ÿ™‚ 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!

  • Reply Giancarlo Caorsi October 21, 2017 at 3:29 pm

    What program are you using to do this?

  • Reply Asma Arshad October 22, 2017 at 8:05 am

    Nice explanation…..

  • Reply Kevin Garcia November 3, 2017 at 1:14 am

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

  • Reply baldy hardnut November 10, 2017 at 10:59 pm

    Physics aint hard if you work step by step little by little ๐Ÿ™‚

  • Reply Raijin Thunderkeg November 20, 2017 at 6:05 pm


  • Reply Viktor Ravnjak November 22, 2017 at 10:09 am

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

  • Reply Meat Missile November 28, 2017 at 5:29 pm

    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.

  • Reply Xena Hollins December 5, 2017 at 2:05 am

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

  • Reply Fahid Ch December 7, 2017 at 5:51 am

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

  • Reply f Forecast January 9, 2018 at 6:15 am

    Thank god for youtube. My textbook sucks

  • Reply Dubious Doggo February 5, 2018 at 3:57 am

    nice but please get a pop filter

  • Reply Devon Prefontaine February 8, 2018 at 6:47 pm

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

  • Reply Swagger Joyce March 2, 2018 at 6:35 pm

    Ur voice is so clear thank god

  • Reply KawasakiRider - May 7, 2018 at 1:37 pm

    Alittle advice to some people you can also use Cos60Deg with finding the perp force to the rotation.

  • Reply Rumal Mahindaratne May 13, 2018 at 3:59 pm

    Thanks for the cool video !!!!

  • Reply Mozaffar Hossain June 7, 2018 at 6:41 am

    I just love david probably more than sal.

  • Reply Mahmood Ul Hassan Awan June 22, 2018 at 2:44 pm

    I'm so happy that Khan academy actually exists it saves a lot of time by making such lengthy explaination simpler.๐Ÿ™Œ๐Ÿป๐Ÿ™Œ๐Ÿป๐Ÿ™Œ๐Ÿป

  • Reply Monica Santos July 10, 2018 at 2:52 am

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

  • Reply stathis kapnidis August 5, 2018 at 3:54 pm

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

  • Reply Rafia najam August 8, 2018 at 9:06 am

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

  • Reply Sangnamja Rugene October 7, 2018 at 9:57 am

    Thank you. Why must a teacher give you 1+1 example equation and give you โˆš586raise to 18th power over 81 times whatsoever in an exam. Gods in heaven.

  • Reply Sakthivel Annaamalai October 17, 2018 at 4:54 pm

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

  • Reply GamingSensation man October 18, 2018 at 1:08 am

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

  • Reply extrafreshhh December 17, 2018 at 3:29 pm

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

  • Reply AliciaKeys642 December 18, 2018 at 3:54 pm

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

  • Reply Fatma Abdullah December 31, 2018 at 5:56 am

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

  • Reply NADIA ALEXANDER February 20, 2019 at 4:13 am


  • Reply johnpaul habib March 10, 2019 at 1:22 pm

    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?

  • Reply Abdullah Irfan April 2, 2019 at 5:31 am

    David is so good at explaining anything like this๐Ÿ™ƒ

  • Reply Sham Srigobind April 6, 2019 at 2:34 pm

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

  • Reply Joshua Landers May 16, 2019 at 8:10 am

    Youre the only reason im passing <3

  • Reply Angeline Lina July 9, 2019 at 8:48 pm

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

  • Reply Garrxtt July 12, 2019 at 10:03 pm

    I graduated too early…

  • Reply Chris sebastian August 11, 2019 at 9:08 am

    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 ๐Ÿ™๐Ÿผ thx.

  • Reply Nur Najiihah September 4, 2019 at 2:17 pm

    Good explanation youโ€™re the reason why I understand this !!!

  • Reply fresnel September 30, 2019 at 10:06 pm

    kinda sounds like lightning mcqueen

  • Reply Joshua Gabriel October 26, 2019 at 10:10 am

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

  • Reply cowgate October 29, 2019 at 11:18 am

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

    Thank you so much!

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