A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Summersnow8

  • one year ago

F1 = 1150 N, F2 = 875 N and F3 = 1450 N are applied at the same point. The angle between F1 and F2 is 90 degrees and the angle between F2 and F3 is 120 degrees. F2 is between F1 and F3. Find the resultant. the answer is 190 N and 126.3 degrees.

  • This Question is Closed
  1. Summersnow8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1437436008915:dw|

  2. Summersnow8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    This is my work: Fx components: 1150 N + (1450 cos 210) = -105.7368 Fy compnents: 875 N + (1450 sin 210) = 150 \[R= \sqrt{105.7368^{2}+ 105^{2}} = 183.52 N \]

  3. IrishBoy123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    looks good

  4. Summersnow8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @IrishBoy123, the back of the book says the answer is 190 N and 126.3 degrees. I am not getting that answer

  5. IrishBoy123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    sounds like your diagram is wrong so we could try some reverse engineering....

  6. Summersnow8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    can you help me draw a new one then? or just go off the text?

  7. IrishBoy123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i drew it differently and got your answer again!! let me see if there is another way you clearly know your stuff so it is annoying that you have to guess the diagram....

  8. Summersnow8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay

  9. IrishBoy123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1437492586634:dw| i wrote a little script to find the angle \( \theta\) as per my diagram that gives a net force of 190N The output: HIT!! angle = 225.21 F = 190.0 net angle= -39.53 HIT!! angle = 240.25 F = 189.9 net angle= -34.99 so it looks to me like you get a net 190N at \( \theta \) = 225.2 or 240.25 and the angle of that 190N is -39 or -35....... IOW i think the book is wrong, if that helps at all.... [the script is attached if you are interested]

    1 Attachment
  10. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.