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Object on whirling string

  1. Mar 10, 2008 #1
    1. The problem statement, all variables and given/known data
    An object with mass M is whirled with constant speed v on the end of a string in a horizontal circle of radius R. the string makes an angle, (theta) with the horizontal. The tension of the string is T.

    Find the tension of the string in terms of any of the given variables and g.

    Please help, Im lost with this problem

    2. Relevant equations

    Please help, Im lost with this problem, new subject were learning in school.

    3. The attempt at a solution
    Sorry i have no clue :(
     
  2. jcsd
  3. Mar 11, 2008 #2
    Force centripetal acceleration = (mv^2)/r (x-axis)
    Force gravity = ma (-y-axis)
    Draw a vector diagram
    T = "hypotenuse"
     
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