1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Force (Can someone check what I did wrong)

  1. May 3, 2005 #1
  2. jcsd
  3. May 3, 2005 #2

    arildno

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    Could you magnify it a bit?
    It is difficult to read the text.
     
  4. May 3, 2005 #3
    Well, it's a little bigger, but still kind of small

    http://img.photobucket.com/albums/v228/LianaBlank/cc5a5559.bmp

    Basically, I know that
    I = 5 A
    B= 0.5 T
    the sides of the loop are 0.05 m long
    The loopp was rotated around the Y axis and makes a 60 degree angle with the X-Y plane

    I must find the Force on side A-B.

    My answer (0.0625) is 1/2 of the correct answer (0.125).
     
  5. May 3, 2005 #4

    Doc Al

    User Avatar

    Staff: Mentor

    If the B field is in the + z direction, then what's the angle between that B-field and side a-b? It's not 60 degrees!
     
  6. May 3, 2005 #5
    I used 30 degrees (angle between B and A-B)... Is that correct?
     
  7. May 3, 2005 #6

    Doc Al

    User Avatar

    Staff: Mentor

    No, it's not. (For some reason I thought you used 60 degrees... sorry about that!) Hint: the line A-B is parallel to the Y-axis.
     
  8. May 3, 2005 #7

    Doc Al

    User Avatar

    Staff: Mentor

    Note that 30 degrees is the angle that the plane of the loop makes with the B-field. It is not the angle between the B-field and the line segment A-B!
     
  9. May 3, 2005 #8
    Oh ok. It's at 90 degrees from B then. That makes more sense. Basically, the side that is 30 degrees from B is the bottom wire right?

    Thanks for your help
     
  10. May 3, 2005 #9

    Doc Al

    User Avatar

    Staff: Mentor

    You got it.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Force (Can someone check what I did wrong)
  1. What did I do wrong? (Replies: 4)

  2. What did I do wrong? (Replies: 6)

Loading...