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How to Transfer a Ball Trick - You don't need to blow

video How to Transfer a Ball Trick - You don't need to blow

without blowing it, you can transfer a ball from a wine glass to another with just a single step, fast and east. just watch my video. I show you how

11 comments

Jan 29, 2008. 1:25 AMyoukneephsycle says:

This is really cool, im gonna try this asap. btw just a note its centrifugal force not centipetal.

Feb 5, 2008. 9:56 AMroberttatefan says:

No, it's centripetal. Centrifugal force is not a real force, but rather a made up word (By chemists) when the centrifuge was created. These chemists made the same mistake the original poster makes, mistakenly thinking that the force acts in an outward direction. Centripetal force acts inwards, towards the origin. The "force" holding the ball on the rim of the glass is actually inertia.

Nov 22, 2008. 1:09 PMHatty says:

Centripetal is the resultant force from the glass acting on the ball. This is otherwise known as the normal force in this example, since the normal force is acting perpendicular to the axis of rotation. Centrifugal is basically inertia. It is the force acting on the ball that is pushing it away from the axis of rotation. Think about a satellite orbiting around the earth. The centripetal force (gravity) is trying to pull it towards the center of the earth, and the centrifugal force (inertia) is equal and opposite to the force of gravity. This equilibrium keeps the satellite in a constant orbit. The correct term is actually centripetal since it fights inertia and keeps the ball in a constant orbit around the axis of the glass.