Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Resultant force?

  1. Jun 28, 2010 #1
    Resultant force???

    A particle is said to be in static equilibrium if the resultant of all forces is applied to it is zero. Find the force that must be applied to a particle that produces static equilibrium if there are two forces, each of 40N applied so that one acts 60o above the positive x-axis and the other 60 below the negative x-axis.
    Give the magnitude of the resultant acting in the negative x direction.

    vectors.jpg
     
    Last edited: Jun 28, 2010
  2. jcsd
  3. Jun 28, 2010 #2

    berkeman

    User Avatar

    Staff: Mentor

    Re: Resultant force???

    Welcome to the PF. You need to show us the Relevant Equations and your Attempt at a Solution, before we can be of tutorial help. What can you say about how to start summing and figuring out the vector equations?
     
  4. Jun 28, 2010 #3
    Re: Resultant force???

    this is what I was thinking in doing
    Taking the magnitude of the given forces

    llF1^2ll llF2^2ll

    which when plugged in would be something like:

    sqrt[(40^2)+(40^2)]

    which will give me a F3=56.57N
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook