1.

An aeroplane requires for take off a speed of 108 kmph the run on the ground being 100m. Mass of the plane is 10^(4)kg 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))

Answer»

`2XX10^(4)N`
`2.43xx10^(4)N`
`6.5xx10^(4)N`
`8.86xx10^(4)N`

Solution :`F-mu_(k)mg=ma, V^(2)-U^(2)=2AS`


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