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Physics

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A 3.21 kg mass attached to a light string
rotates on a horizontal, frictionless table. The
radius of the circle is 0.855 m, and the string
can support a mass of 15.3 kg before breaking.
What maximum speed can the mass have
before the string breaks?
Answer in units of m/s

  • Physics -

    m₁=3.21 kg
    m₂=15.3 kg
    m₂g=T
    m₁v²/R=T
    m₁v²/R= m₂g
    v=sqrt{ m₂gR/ m₁}=
    =sqrt{15.3•9.8•0.855/3.21} = 1.8 m/s

  • Physics -

    6.32 m/s

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