Ahelicopter is moving horizontally to the right at a
constantvelocity. the weight of the copter is 53800 newtons. the
lift forcegenerated by the rotating blades make an angle of 21
degrees withrespect to the vertical. a) what is the magnitude of
the liftforce?
b) determine the magnitude of the air resistance that
opposesthe motion.

Explanation:

Given

Weight of helicopter

inclination of blades with vertical

Suppose is the lifting Force

Now using F-B-D

as helicopter is moving with constant velocity

balancing forces in Vertical Force

Now sin component of lift is air resistance

where R=air resistance

wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves.