A glider of mass flies horizontally

PHYSICS · Subjective · CBSE · Physics · Mechanical Properties of Fluids · Mechanical Properties of Fluids

Problem

A glider of mass

300\,\text{kg}

flies horizontally. The air speed below its wing is

50\,\text{m}\,\text{s}^{-1}

and that above the wing is

65\,\text{m}\,\text{s}^{-1}

. If the density of air is

1.25\,\text{kg}\,\text{m}^{-3}

, determine the minimum total area of the wings required to keep the glider in level flight. Take

g = 9.8\,\text{m}\,\text{s}^{-2}