An aeroplane of mass M requires a speed v for take off. The length of runway is s and the coefficient of friction between the tyres and the ground is `mu`. Assuming that the plane accelerates uniformly during the take-off, the minimum force required by the engine of the plane for take off is:

Options

A. `M((v^2)/(2s) + mu g)`
B. `M((v^2)/(2s) - mu g)`
C. `M((v^2)/(s) + 2mu g)`
D. `M((v^2)/(s) - 2mu g)`

Answer

A