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What is the explanation behind the magician's tablecloth trick and how does it relate to inertia?
Wiki User
∙ 14y ago
When a magician sharply yanks a tablecloth from under any number of precarious objects selected for dramatic effect, he takes advantage of the inertia of the objects on the tablecloth.
According to Sir Isaac newton's classical laws of motion, an object at rest will remain at rest unless acted upon by an outside force; ie, even at rest, an object has inertia and will resist acceleration.
As the tablecloth is pulled, the friction caused by the weight of items on it accelerates them. But this takes time; as long as the friction is low and the acceleration brief, the tablecloth can be pulled away before items on the table are moved very far. But, try this with a less slippery tablecloth (more friction) or by pulling slowly (longer acceleration) and disaster results.
Basically, as long as there is more inertia (read mass) than friction, this can be done.
Wiki User
∙ 14y ago
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