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Homework Help: Tension of two ropes problem

  1. Apr 13, 2009 #1
    1.A box of mass m,is suspended by a vertical rope attach to the ceiling and another rope attach to the wall horizontally to a wall.1)Draw a vector diagram representing the force in this situation.2)What is the tension in each rope if the box is hanging straight down.3)what are the rope tensions.4)Suppose the box has mass 20Kg,calculate the tension in the pair of ropes

    Any help or suggestion would be much appreciate it.Thanks
    1. The problem statement, all variables and given/known data

    2. Relevant equations

    3. The attempt at a solution
    What i am getting the idea out of this problem is that i assume vector diagram will be 90 degree.But i still couldn't figure out the 2,3 & 4 question
  2. jcsd
  3. Apr 13, 2009 #2
    What do you mean by another rope attach to the wall horizontally to a wall ? Do you have a diagram?
    And what's the difference between questions 2 and 3?
  4. Apr 13, 2009 #3
    No diagram was given.But it will be like 90 degree one vertically attach to the ceiling and another attach horizontally to the wall.That question 2 and 3 is what bother me most as it look like the same question.
  5. Apr 13, 2009 #4
    Draw the vector diagram, and see how forces on the block cancel each other out. Is the horizontally attached rope doing anything?
  6. Apr 13, 2009 #5
    I think the question want us to assume that tension on both rope are the same as the diagram i can think of is perpendicular line with the right angel.So it will be like the tension of the two ropes equal to the force acting by the object?
  7. Apr 13, 2009 #6


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    Homework Helper

    According to the problem, two ropes must be parallel to each other. at one ends of the ropes the box is attached. And the other ends are connected to ceiling and the wall. In that case tension in the ropes must be equal.
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