Answer to Question #102452 in Mechanics | Relativity for Akshay

Question #102452
A plane is flying with a constant speed along a straight line at an angle of 30
with the horizontal. The weight of the plane is 100000 N and its engine provides
a thrust of 120000 N in the direction of flight. Two additional forces are exerted
on the plane: the lift force perpendicular to the plane’s wings, and the force due
to air resistance opposite to the direction of motion. Draw the free-body diagram
showing all forces on the plane. Determine the lift force and the force due to air
resistance
1
Expert's answer
2020-02-07T10:32:33-0500

As per the given data in the question,

"\\theta=30^\\circ"

The weight of the plane =100000N

Thrust force on the plane, along the direction of the flight =120000



So, Additional thrust force is "F_{th}"

"\\Rightarrow F_{th}+120000 \\sin 30=100000"

"F_{th}=100000-600000=400000N"

Hence, resist force "R=120000\\cos30=600000\\sqrt{3}N"


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