Description
Archimed’s can is utilized to demonstrate liquid interacting with the body put
into water. One can measure expulsive force which is exactly the same as the
weight of displaced liquid is.
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The device consists of a can (100 mm depth, 45 mm diameter), a cylinder and
spring dynamometer. The can is very similar to cylinder. The can has an ear at
the top and a small loop at the bottom. The can is mounted to dynaometer by
means of ear. The cylinder is linked to loop by means of thread. The cylynder
is filled with mixture of sand and alabaster so that the average density of the
mixture is a little bit over density of the water. Dynamometer is implemented
as opened spring. The top tip of spring is put on staple’s hook and the bottom
tip holds the disc pointer and can hook hanged. The rod lies through holes in
staple. A fixator measures spring stretching. The fixator moves on plate which
moves on staple.
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