Bernoulli's (Explaining Lift Force Only, not Addition of Vector Forces in this Demo)

This is a classic demonstration of Bernoulli’s Principle. Note: For both A and B – gravity/weight is providing a downward force and dryer/blower is providing an upward force. There are two primary explanations for this demonstration. A.) There is a moving stream of air traveling around the ball resulting in an area of less pressure. The ball is prevented from falling out of the moving stream of air because it is pushed in by the higher pressured air adjacent to the moving stream of air. B.) The air travels around the ball (Coanda Effect) and is moving at the greatest velocity at the top of the ball, resulting in an area of low pressure above the ball (lift). The ball is drawn toward the area of low pressure. This area of low pressure can be disturbed by placing a hand above the ball. Explanation B is shown in this video.

NOTE: Misspoke at time 02:00 - should have said air is traveling faster instead of at the same time
(https://www.grc.nasa.gov/www/k-12/airplane/wrong1.html)

More - https://sdpb.sd.gov/OldSchoolScience/default.aspx

This is a twist of the classic Ping-Pong ball/hairdryer demonstration used to show Bernoulli's Principle. A leaf blower replaces the hairdryer and a beach ball replaces the Ping-Pong ball. This is amazing to watch.

Видео Bernoulli's (Explaining Lift Force Only, not Addition of Vector Forces in this Demo) канала SDPB