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What you
need
A Two-pan scale, 2 sheet metals
of equal size from a magnetic and from a non magnetic soft drink can.
Experiments
Left: The light
child on the left side of the seasaw carries now 3 bottles full of
mineral water: The seasaw is balanced.
Photo 2: On the
left
side of the scale a felt tip (F) is fixed aside a yellow pogemon (G):
The scale is balanced.
Photo 3: On the
left
pan of the scale with the non magnetic metal sheet water drops were
added from a pipette.The scale is balanced.
Right:
A scale is balanced by water on the pan with the lighter piece of metal.
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