1. Limited time only! Sign up for a free 30min personal 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!

Vector products and torque

  1. Apr 5, 2008 #1
    [SOLVED] Vector products and torque

    1. The problem statement, all variables and given/known data
    A particle is located at the vector position r = (i + 3j) m, and the force acting on it is F = (1i + 7j) N.
    (a) What is the torque about the origin?
    (b) What is the torque about the point having coordinates (0, 4) m?

    3. The attempt at a solution
    I got the answer for the first part, but I am confused about part b. At first I thought I was supposed to just switch (i +3j) with (0,4) but that is not right. So then I thought that maybe I was supposed to do this:
    (1,3) - (0,4) = new vector, and the coordinates for the new vector to find the torque which would be equal to 8 nm. Is that how I am supposed to do it?
  2. jcsd
  3. Apr 5, 2008 #2

    Shooting Star

    User Avatar
    Homework Helper

    Quite correct.
  4. Apr 5, 2008 #3
    I thank ye
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Vector products and torque
  1. Vector products (Replies: 9)

  2. Torque and vectors (Replies: 3)