The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=40000 N.

The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=40000 N. The lift force L generated by the rotating blade makes an angle of 21.0° with respect to the vertical. (a) What is the magnitude of the lift force? (b) Determine the magnitude of the air resistance R that opposes the motion.