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!

Homework Help: Hw help with vector natur of newton's second law of motion

  1. Sep 27, 2006 #1
    only two forces act on an object (mass = 3.00 kg). 40.0N east and 60.0N north of east at 45 degrees. Find the magnitude and the direction (relative to the x axis) of the acceleration of the object.

    I don't really know where to begin.
     
  2. jcsd
  3. Sep 27, 2006 #2

    berkeman

    User Avatar

    Staff: Mentor

    Add the components of the two vectors to make a sum vector. Add the two components in the N direction to get the N sum, and add the two components in the E direction to get the E sum. How do you break up the 2nd vector into its N and E components? All you need is a little trig.
     
  4. Sep 27, 2006 #3
    Use the relationships: [tex] F_{x} = F\cos\theta, F_{y} = F\sin\theta [/tex]
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook




Loading...
Similar Threads for help vector natur Date
Help The Vector Nature of Newton's Seond Law of Motion Sep 27, 2006