Write the difference between aeroplane and helicopter
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You have seen airplane and helicopter in the sky. Both are the type of flying machine. One fly with less sound and one with more sound. I am not introducing you to something which is not known by you. Most of you know about airplane and helicopter.
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Planes need lift, thrust, force and drag in order to lift off and fly..........................A helicopter generates lift simply by spinning its rotors very rapidly; it does not need to be moving in order to generate lift," Cassel noted.
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