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Homework Help: Need help with mechanics statics; finding resultant force

  1. Feb 18, 2015 #1
    Hi! Can anyone help me with these problems? When I try to draw a parallelogram, I couldn't find the angles. Please help.

    http://imageshack.com/a/img673/8733/GsXt9f.jpg [Broken]
    http://imageshack.com/a/img910/1949/1AB7iB.jpg [Broken]
    Last edited by a moderator: May 7, 2017
  2. jcsd
  3. Feb 18, 2015 #2
    For 2-3
    Take horizontal or vertical components. There are two variables.
    Along horizontal
    Fcosø- 700 cos15°=0
    and along vertical
    700 sin15° - F sinø= 500
    2 variables , 2 equations. Hope you can solve.
    Hope you know sin15° and cos15°. May have learnt in Maths classes.
    Why you removed the template? Violating rule of PF.
    Guess you are new, so may not have read rules but take care in future
  4. Feb 18, 2015 #3
    It is vector algebra. You can do ordinary addition to vectors of same direction. So try to resolve the vectors into x and y components and do ordinary math on them.
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