A horizontal axis lift type wind rotor of diameter 4 m is used to pump water at a wind velocity of 15 km/h at standard atmospheric pressure and temperature (density of air is 1.23 kg/m\(^3\)). If velocity of wind leaving the rotor blade is reduced to one-third of the approaching wind velocity, the thrust acting on the blade of the wind rotor in N is \(\underline{\hspace{1cm}}\) (round off to two decimal places).