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Homework Help: Finding centripetal force of an object

  1. Apr 3, 2013 #1
    this is a question i have to do over the holidays and have no clue of how to do it.
    i cannot access our school email in which i have the worked solutions to all the questions.

    A ball is tied to a string and whirled in a horizontal circle radius of 2.0m. The string makes an angle of 10 degrees to the horizontal. The tension in the string is 12N.

    a) what is the centripetal force acting on the ball?

    b) if the mass of the ball is 200g what is its speed?

    c) what is the period of revolution of the ball?

    any help would be greatly appreciated.
  2. jcsd
  3. Apr 3, 2013 #2
    Here is a hint: Draw a free body diagram of the ball. Show the tension of 12N, the force due to gravity and the centripatal force. The 10 degres should help in doing this.
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