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A model airplane of mass 1.5 kg is attached
to a horizontal string and flies in a horizontal
circle of radius 5.8 m, making 2 revolutions
every 8 s. (The weight of the plane is balanced
by the upward “lift” force of the air on the
wings of the plane.)
The accelaration due to the gravity is 9.81
Find the speed of the plane.

  • physics -

    speed=distance/time=2PI*5.8/4sec m/s

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