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Vector component of the weight of an object

  1. May 15, 2014 #1
    Graduated College over thirty years ago. In physics, I recall a a question where one is required to weigh an object beyond the capacity of the scale. The answer involved resting one edge of the object on scale and the other on a separate support higher than the scale such that the object created and angle from the perpendicular . I believe that the cosine of the angle from the perpendicular played in the solution. Guidance sought
  2. jcsd
  3. May 15, 2014 #2


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    Staff: Mentor

    Hi Philpense. http://img96.imageshack.us/img96/5725/red5e5etimes5e5e45e5e25.gif [Broken]

    It sounds do-able. Consider something uniform like a length of sawn timber. Providing you can ensure the upper support prevents the beam slipping, then it appears the force on the lower support (i.e., the scales) will be cos θ x half the weight, where θ is the beam's inclination to the horizontal.
    Last edited by a moderator: May 6, 2017
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