Problem 2 The "log wind profile" is a good approximation of the wind velocity near the ground: u(y) = In (*). where y is the vertical coordinate (y=0 at the ground

surface and positive upwards); u, is the friction velocity; X=0.4 is the von Karman constant; and yo is the roughness length. Assume u, = 0.3 m/s, y = 20 mm, and 7 = 35 °C. (a) (b) (c) At what elevation does the "non-slip" condition, i.e. u=0, occur for log wind profile? What is the shear stress at y=yo? Plot the horizontal wind speed a(y) and the shear stress z(y) versus y for 0