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physics

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Calculate the speed of a ball tied to a string of length 1.5 m making 4.6 revolutions every second.

  • physics - ,

    Va = 4.6 rev/s * 6.28 rad/rev = 28.9 rad/s = Angular velocity.

    C = pi*D = 3.14 * (2*1.5) = 9.42 m.
    V = 4.6 rev/s * 9.42 m/rev = 43.4 m/s.
    = Linear speed.

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