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Bed of Nails

A bed of nails in Cylcone colors

Concept Overview:

1. If a force is distributed over a larger area, the pressure per unit is decreased.

2. A person lying on the bed of nails remains unharmed because their weight is spread out over the bed of nails.

Lecture Procedure

Step(s) to Follow Expected Result

1. Lay the board horizontally on the floor so that the nails point upward.

2. Carefully lie down on the nails

The lecturer will remain unharmed because their weight has been distributed

SAFETY:  The most dangerous part of the demonstration is lowering yourself onto the nails or getting back up.  Take care that too much of your weight doesn't become concentrated over the surface of too few nails.

Category
Identifier
M: D - 017