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: Concurent and Parallel Forces 2

  1. Jan 29, 2006 #1
    Four forces each of magnitude 2750lb act at the same point. The angle between adjacent forces is 30degrees. find the resultant force. I worked it out and got FR= 0 in the x and 0 in the y is that right??
     
  2. jcsd
  3. Jan 29, 2006 #2
    Let's take F1 as X-direction. Then F2 makes 30deg with it and similarly F3 makes 60deg while F4 makes 90 deg or denotes the Y-direction.
    Now add the vectors properly - 2750x + 1375*root3x + 1375y + 1375x + 1375*root3y + 2750y. This isn't anyway 0. Why did you get them wrong?
     
  4. Jan 29, 2006 #3
    i see what ur saying thanks
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook