Was wiegt das Kind auf der Schaukel, was wiegt der Stein im Wasser?

Elemente der Naturwissenschaft 87, 2007, P. 58-67 | DOI: 10.18756/edn.87.58

Abstract:

A person’s weight, either experienced themselves or obtained from weighing scales, is not constant but depends on the movement, or more precisely, the acceleration of their body. This ‘apparent weight’ is here examined qualitatively and quantitatively and presented more exactly using two examples: the swinging and falling movements of a stone in water. This is done without using the conventional concept of gravity.
 

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