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Homework Help: Ball hanging from string, what is tension when at its lowest point?

  1. Sep 28, 2010 #1
    1. The problem statement, all variables and given/known data

    A heavy ball with a weight of 130 is hung from the ceiling of a lecture hall on a 4.6--long rope. The ball is pulled to one side and released to swing as a pendulum, reaching a speed of 5.6 as it passes through the lowest point.

    What is the tension in the rope?


    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Sep 28, 2010 #2

    rl.bhat

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    Homework Helper

    Hi racer98jc, welcome to PF.

    What are the forces acting on the ball at the lowest point of the swing?
     
    Last edited: Sep 29, 2010
  4. Sep 28, 2010 #3
    Hello,

    at the bottom: tension and the balls own weight are acting on it. Correct?
     
  5. Sep 29, 2010 #4
    Correct(the question probably wants you to ignore frictional forces)
     
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