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Which calculation should i use?@_@

  1. Aug 6, 2010 #1
    which calculation should i use??@_@

    1. The problem statement, all variables and given/known data
    a 1.4 kg bottle of milk is lying horizontally in the rack. the two surfaces on which the bottle rest r 900 apart, and the right surface makes an angle of 450 with the respect to the ground. each surface exerts a force on the bottle that is perpedicular to the surface. determine the magnitude of each of these forces
    * the bottle is lying 90 degree vertically


    2. Relevant equations

    f=ma?
    w=mg?
    or should i find the resultant force by using cos and sine


    3. The attempt at a solution
    ive tried..but all the answer are different..
     
  2. jcsd
  3. Aug 6, 2010 #2

    Doc Al

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    Staff: Mentor

    Re: which calculation should i use??@_@

    Call the force exerted by each surface on the bottle F. What other forces act on the bottle? What's the net force on the bottle? Consider vertical components.
     
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