What is the downward force acting on an airplane?

Answer 1

assuming a standstill on the ground, Gravity. If the plane was appearing to be motionless in the air (a VERY strong headwind and a slow plane) Then it would be Thrust, Drag, Lift, and Gravity.

Answer 2

It all depends on the location of the plane. When a plane is at standstill on the ground, the forces of gravity are acting on the plane, keeping it to the ground and not floating up to space. When it is in the air and at a standstill, and hopefully, this would never be happening because the plane would be falling out of the sky, then the force of gravity would once again be acting upon the plane, pulling it out of the sky. There are also the winds and friction against the plane, in the direction that the plane is moving.

Answer 3

Lift, thrust, gravity, and drag (friction)

Answer 4

No - amongst other things (other than a helicopter or VTOL) aircraft require forward momentum to produce air movement across (and under) the wings to produce lift.

Answer 5

There is gravity and upthrust the forces are balanced

Answer 6

what forces are acting on an aeroplane in flight

Answer 7

Assuming the airplane is flying through the air, the downward force will be gravity F = m * a in this case, F = m (plane) * a (acceleration) (acceleration of gravity ~ 9.81) so F = m * 9.8

Answer 8

We'll assume that the question refers to increasing speed.

When the speed of the aircraft increases, the weight remains constant,

but the lift, thrust, and drag all increase.

Answer 9

When a plane stalls it looses 'Lift'.

The faster airflow over the top of the wing causes lift. When the airflow is disturbed or reduced (by stalling), this no longer works.

Answer 10

What is the downward force that acts on an airplane in flight?