A typical small rescue helicopter has four blades, each is 4.00 m long and has a mass of 57 kg. The blades can be approximated as thin rods that rotate about one end of an axis perpendicular to their length. Calculate the rotational kinetic energy in the blades when they rotate at 327 rpm. The moment of inertial for all 4 rods is given by the following equation I=4/3*M*l^2.