Problem $2(10$ Points $-$ show all work$)$

An anemometer mounted $10$m above a surface with crops, hedges, and shrubs, $($friction coefficient of $0\mathrm{.}20)$ shows a windspeed of$5$ m$/$s$.$ Assuming $15$C and $1$atm pressure, determine the fol lowing for a wnid turbine with hub height $80$ mand rotor diameter of $80$ m$.$ a$.$ Estimate the wind speed and the specific power in the wind $($W$/$m$?)$ at the highest point that the rotor blade reaches. Assume no air density change over these

heights

b$.$ Repeat $($a$)$ at the lowest point at which the blade falls.

c$.$ Compare the ratio of wind power at the two elevations using results of$($a$)$ and $($b$).$