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Sagot :
Given,
The mass of the jet, m=120000 kg
The acceleration of the jet in the horizontal direction, aₓ=2.2 m/s²
As the jet is accelerating down the runway, there is no vertical acceleration on the jet due to its engines.
The forces acting on the plane in the vertical direction are its weight and normal force, which are balanced. Thus total vertical acceleration of the jet is zero.
From Newton's second law, the net force in the vertical direction can be written as
[tex]F_y=ma_y[/tex]Where ay is the acceleration of the plane in the vertical direction which is zero.
Thus,
[tex]\begin{gathered} F_y=120000\times0 \\ =0\text{ N} \end{gathered}[/tex]Thus the net force acting on the plane in the vertical direction is zero.
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