Calculating Force Exerted by Wind on Object

[ZaTux]

Calculating the force exerted on an object

Hello everyone,
I have done the next experiment: Air produced by a fan entered a vertical tube, inside the tube there was a ping-pong ball, so when the wind entered the tube the ball move upwards a certain distance.
My question is: How do you calculate the force that the wind exerted on the ball to elevated a certain distance.
TIA

 

[Astronuc]

The force on the ball by the air is just the air pressure * the area of the ball on which the air acts.

At some equilibrium, the force of the air balance the force of gravity acting on the ball, otherwise the ball would continue to rise.