Draw a free-body diagram of the airplane, including air drag. Identify as many forces as you can think of but do not try to calculate them. (full question below)

Question

An airplane passes by overhead. The plane has a mass of 50,000 kg, is at an altitude of 10,000 meters and moves at a constant velocity of 150 m/sec. The altitude, velocity and direction of travel all are constant. Draw a free-body diagram of the airplane, including air drag. Identify as many forces as you can think of but do not try to calculate them.

Answer 1

You have F_gravity acting downwards, F_lift acting upwards from the wings counteracting gravity and keeping the plane in the air, F_thrust from the jets propelling the plane forward, and F_drag acting backwards from the wind.