Questions

An aeroplane requires for take off a speed of 108 kmph the run on the ground being 100m. Mass of the plane is 10⁴kg and the coefficient of friction between the plane and the ground is 0.2. Assuming the plane accelerates uniformly the minimum force required is (g =10ms^-2)

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2 x 104 N

2.43 x 104 N

6.5 x 104 N

8.86 x 104 N

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detailed solution

Correct option is C

F−μkmg=ma,v2−u2=2as

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