Bernoulli's Principle Examples

Ping Pong Balls and Funnels

Place a ping pong ball into the opening of a small plastic funnel. Now blow through the small end to try to blow the ball out of the funnel. Any luck? Blow harder. Still no luck. OK bring out the big guns. Get a shop vacuum cleaner that can be hooked up backwards. Put the hose into the exhaust end so that it blows air out rather than sucks it in. That should blow the ball out. Stick the funnel tightly into the hose and try to blow that ball across the room. Won't work. The ball will bounce around a little but the blast of air will not be able to blow it out the large end of the funnel. Paradoxically the airstream that should blast the ball across the room s