trig

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a propeller turns at 300 rpm. Find the angular speed in rad/sec and the linear speed at the tip if the tip to the center is 30cm

  • trig -

    angular velocity = 300(2π) radians/minute
    = 300(2π)/60 radians/sec
    = 10π radians/sec

    circumference = 2π(30) = 60π cm

    so the linear velocity at the tip is 300(60π) cm/min
    = 300(60π)/60 cm/se
    = 300π cm/sec
    or
    3π m/sec

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