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Homework Help: Right hand rule finding torque help

  1. May 4, 2010 #1
    1. The problem statement, all variables and given/known data
    It is part of a question, i am not sure how to use RHR to find direction.
    http://img220.imageshack.us/img220/2594/rhr.jpg [Broken]

    Uploaded with ImageShack.us
    I need to find direction of torque by using right hand rule with the Force vector and R vector ( pointing away from pivot point i think, for rigid body)

    2. Relevant equations

    none

    3. The attempt at a solution

    I put the tails of F and r vectors together, and point thumb away from me, with hand parallel to r vector, and then curl my 4 fingers toward F i get clock wise.


    Im not sure if i am right. thanks
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. May 4, 2010 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Looks good to me. (Assuming I understand your diagram.) To curl your fingers from r towards F, your thumb must point into the page. Thus the torque vector will be into the page, or (equivalently) the torque will be clockwise.
     
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