Question 1

A jet airliner with a mass of m_A kg has three working engines, each of which produces a constant thrust of T kN during its take-off roll.

Consider the runway from A to B as shown in the figure, which has an uphill incline of θ.

Assume a rolling friction coefficient equal to 0.

Select the correct free body diagram for the airliner from the options below. Align the coordinate system such that the x-direction is parallel to the runway and the y-direction is normal to the runway.