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A 0.40kg ball, attached to the end of a horizontal cord, is rotated in a circle of radius 2.1m on a frictionless horizontal surface.If the cord will break when the tension in it exceeds 80N , what is the maximum speed the ball can have?

  • physics -

    M V^2/R = 80 N

    R = 2.1 m
    M = 0.40 kg

    Solve for V

  • physics -

    1.2 m/s

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