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Homework Help: I have Questions

  1. Oct 25, 2011 #1
    hey . this is a simple Questions , look at pic this is a statics

    [PLAIN]http://hh7.net/Sep/hh7.net_13195790041.png [Broken]

    my Question . how he calculate 120 , 290 for Angles ??
    Last edited by a moderator: May 5, 2017
  2. jcsd
  3. Oct 25, 2011 #2


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    Your diagram doesn't match the table.
  4. Oct 25, 2011 #3
    I don't quite understand what's being asked.
  5. Oct 26, 2011 #4
    The angles show the direction each force is acting,ANTICLOCKWISE relative to the positive x-axis ---->
    150 N acts at 120 degrees, starting from ---> go anticlockwise 90 degrees,then add 30 degrees = 120 degrees
    50 N acts at 250 degrees,not 290 go 180 degrees anticlockwise then add 70 degrees.

    P.S THE UNITS ARE ALL WRONG, they should be N not Nm
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