Physics Lecture – 8 – Vector Addition

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44 responses to “Physics Lecture – 8 – Vector Addition”

  1. Ajsbored Avatar

    How do you come up with 130cm?

  2. lyra siph Avatar

    I like your trucks.

  3. jen 177 Avatar

    Would the stump be moved in the direction as the added vectors or continuing along the 130 vector line?

  4. taneshaj73 Avatar

    WTH…what is the formula this way is too complicated

  5. Kingsito Avatar

    Since you shift the line, the angle need to change to its reference angle. the original angle is 45 means that the reference angle is 135 (180-45=135). Then use the laws of Cosine to solve the missing side which is 139.8967.

  6. TATTOO HORIMARU Avatar

    hi there professor i want to find out how grams of force does the armature bar of a tattoo machine and other things about it as in how much magnetism the coils produce at 7 volts and how many times per sencond does the armature bar beats on the coil´s nucleous , please I need this info for a book am trying to write taking you in concideration in the book.

  7. Varun Babu Avatar

    Do all Americans say tons instead of newtons for force calculations? Awesome job bro!

  8. Alex Carvajal Avatar

    Learning AND laughing, well done sir.

  9. Dominic Page Avatar

    why is it 130 tons?

  10. Apollyon Avatar

    what is the program that you use?

  11. Maxwell Hendricks Avatar

    What if there were 3 trucks pushing the stump? Would vector addition still work?

  12. Todd North Avatar

    "Listen, rednecks, you need to do vector addition." lol

  13. jayesh sawant Avatar

    For the ones who are saying to use law of cosine, could we use heron's formula to calculate the measure of the third side? Thank you 😀

  14. D: Avatar

    I want to know the actual numbers for this.

  15. x305seth1 Avatar

    Use the law cosine

  16. Gizmo aP Avatar

    what if you switched around the heads? you moved the bigger one (100 cm) to the tail of the 50 cm, how do you know which one to move? btw love ur videos, I'm learning lots 

  17. Arvasu Kulkarni Avatar

    How do you calculate force

  18. Aatrox Sagitarius Avatar

    So kind of like triangulation?

  19. kaneki yow Avatar

    Man thanks for this awesome video cod in my tuition centre, I completely didn't understand this. Now I think it's cleared up a bit 🙂

  20. TPHTCN Avatar

    Very cool! 🙂

  21. downsideupgoesgroar Avatar

    also the pythagorean theorem wouldn't make sense in such situation….. triangle sides don't have directions, unlike vectors.

  22. Flap Flankers Avatar

    The Pythagorean Theorem only applies to right triangles; this is not a right triangle.

  23. Huubster125 Avatar

    You can use Pythagorean Theorem, actually. Cosine would be easier though.

  24. Cor Atro Avatar

    It's 139.897 cm (or tons) long. The largest angle is 180º-45º = 135º. Using the law of cosines, you should get that value.

  25. CS Vodka Avatar

    You cannot use the Pythagorean theorem… why? because it is not a right angled triangle

  26. Abdirahman Avatar

    I've watched like 30 videos from u just today both physics and biology…u don't know how u helped me. i don't know how to appreciate either…Thanks a lot man…

  27. Elisha Day Avatar

    The hypotenuse is 111.803 not 130

  28. jamesRPM Avatar

    Because you divided 50 by 25 to get 2 and 100 by 25 to get 4, you need to multiply to your answer by 25 to get 130.. If that makes sense..?

  29. Adam Catto Avatar

    so without knowing the exact angle the length of the dotted line can't be determined

  30. Adam Catto Avatar

    gotta use cosine law here buddy

  31. Jazz Ayala Avatar

    Doesn't matter which tail is attached to which head. They both yield the same result.

  32. TheMrStoryTeller Avatar

    I would have thought there would have been a ford collision.

  33. Jasia Ahmed Avatar

    i think force is measured in newtons(N)

  34. callmeweezy Avatar

    If i use ratio and have 2cm west and 4cm northwest I will get say 5.2 tons which is not equivalent to 130 tons

  35. caladari Avatar

    Silly ol' rednecks.

  36. Anton Greenidge Avatar

    i think it is 160 tons

  37. Babylon Gate Avatar

    jesus do you know physics too? not just C++

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