Physica Helicopter?

Question

The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W = 54600 N. The lift force 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 that opposes the motion.

Answer 1

Well let's see... No drawing so let's do that

W=Lcos(A)
W- weight of the craft
L - lift froce
A - the angle the rotating blade makes with the vertical

a) L= W/cos(A)
b) F= L sin(A)