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17 September, 05:31

The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=42500 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.

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  1. 17 September, 07:14
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    Answer: A) 45503 N b) 16290 N

    Explanation:

    A)

    L = W / cos 21 = 42500 / cos 21 = 45503 N

    B)

    R = L sin 21 = 45503 x sin 21 = 16290N
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