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  • A helicopter of mass 1000 kg rises with a vertical acceleration of 15 m s -2 . The crew and the passengers weigh 300 kg. Give the magnitude and direction of the (b) action of the rotor of the helicopter on the surrounding air,

Q5.27 A helicopter of mass 1000 kg rises with a vertical acceleration of 15 m s-2. The crew and the passengers weigh 300 kg. Give the magnitude and direction of the

(b) action of the rotor of the helicopter on the surrounding air,

Answers (1)

best_answer

(b) In this case, we need to consider helicopter and passengers in a system because we need to determine the action of the rotor.

        So by Newton's laws motion, we have :

                                                    R\ -\ mg\ =\ ma

or                                                 R\ =\ ma\ +\ mg

or                                                        =\ 1300\left ( 15+10 \right )

or                                                        =\ 32500\ N

The direction of the force of rotor on the surrounding will be in the downward direction.

Posted by

Devendra Khairwa

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