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If the air screw of an aeroplane rotates clockwise when viewed from the rear and aeroplane takes a right turn, the gyroscopic effect will -
  • a)
    tend to raise the tail and depress nose
  • b)
    tend to raise the nose and depress the tail
  • c)
    tilt the aeroplane about spine axis
  • d)
    None of the above
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
If the air screw of an aeroplane rotates clockwise when viewed from th...
Given that, the Air Screw of an Aeroplane rotates clockwise. when viewed from the rear end and the Aeroplane takes right turn, Then

 
From the Above Figure:
OA = Angular momentum vector before turning
OB = Angular momentum vector after turning
AB = Active gyroscopic couple
A'B' = reactive gyroscopic couple whose value is equal to the active gyroscopic couple but opposite in direction.
In the figure, vector AB is perpendicular to the plane of the applied couple which is in an anticlockwise direction when viewed from the left side of the plane. With the help of the Right-Hand Screw Rule, we observe that the Reactive couple will be in Clockwise Direction which tends to raise the tail and depress the nose.
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If the air screw of an aeroplane rotates clockwise when viewed from the rear and aeroplane takes a right turn, the gyroscopic effect will -a)tend to raise the tail and depress noseb)tend to raise the nose and depress the tailc)tilt the aeroplane about spine axisd)None of the aboveCorrect answer is option 'A'. Can you explain this answer?
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