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Help with conical pendulum problem

  1. Nov 8, 2008 #1
    1. The problem statement, all variables and given/known data

    okay here is the problem: A conical pendulum is formed by attaching a 500g ball to a 1.0m long string, then allowing the mass to move in a horizontal circle of radius 20cm. What is the tension in the string?

    2. Relevant equations

    My professor gave a hint that said use the fact that the vertical component of acceleration is zero since there is no vertical motion.

    If i use the equation Tcos(theta)=mg, i get the given answer 5N. if this is correct should my Tension force be on the y axis at 90 degrees on my FBD and my weight force on the y axis at 270 degrees?
     
    Last edited: Nov 8, 2008
  2. jcsd
  3. Nov 9, 2008 #2

    Hootenanny

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    Sounds good to me :approve:
     
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