Calculate the centripetal force (in N) on the end of a 57 m (radius) wind turbine blade that is rotating at 0.3 rev/s. Assume the mass is 6 kg.

An airplane is flying with a velocity of 240 m/s at an angle of 30.0∘ with the horizontal, as the drawing shows. when the altitude of the plane is 2.4km, a flare is released from the plane. the flare hits the target on the ground. what is the angle θ?