Calculate the takeoff velocity of the plane

Reference no: EM13242027

When the plane atats to accelerate for take off, a man is holding the pocket watch steady by its 20cm chain, inspecting the surface, watching the second tick away. As the plane accelerates, he saw the watch and chain are making constant angle (25 degree) with respect to the vertical until the plane take off, 18 seconds after it started accelerating. Estimate the takeoff velocity of the plane!

Reference no: EM13242027

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