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Question about torque/forces

  1. May 3, 2015 #1
    A 1130 N uniform boom is supported by a cable perpendicular to the boom, as seen in the figure below.
    The boom is hinged at the bottom, and an m = 1870 N weight hangs from its top. Assume the angles to be mimetex.gif = 69.5o and mimetex.gif = 90.0o - mimetex.gif . Find the tension in the supporting cable
    Find the x-components of the reaction force exerted on the boom by the hinge (choose to the right as positive).
    Find the y-components of the reaction force exerted on the boom by the hinge (choose upwards as positive).

    I don't understand why radius is taken into account when calculating tension, but doesn't play a role in calculating the components of force.
     
  2. jcsd
  3. May 3, 2015 #2
    It would help to see the picture.
     
  4. May 3, 2015 #3
    https://spock.physast.uga.edu/res/brookscole/serway/College_Physics_7ed/Chap08/graphics/serw0822.gifhttps://spock.physast.uga.edu/res/brookscole/serway/College_Physics_7ed/Chap08/graphics/serw0822.gif
    sorry, here it is
     
    Last edited: May 3, 2015
  5. May 3, 2015 #4
  6. May 3, 2015 #5

    SteamKing

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