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Experiment: Magician’s Tablecloth Trick
Concept: Object’s stay at rest
unless a strong enough force acts on the object (from Newton’s 1st Law
of Motion)
Materials: Plastic bowl, piece
of material, or cloth without sewn edges.
Procedure: Hang the material off
the edge of the table a few inches.
Put the plastic bowl on the cloth.
Pull DOWN (not sideways) quickly.
Be amazed!
Above and Beyond: Although there is friction between the
tablecloth and the bowl, it is not enough to move the object sideways (if you
are fast and pull down), thus the bowl stays at rest! Try this with a cup, bowl and maybe a spoon, but ask your parents first.
Watch one of my favorite scientists do this trick!
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