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De Luca, R.; Faella, O. – Physics Education, 2022
The static equilibrium properties of a spool, resting on an incline and subject to the tension exerted by a string wrapped around the core cylinder, are studied by means of Newtonian mechanics. The overall behaviour of this system is imagined to be similar to that of a doggie kept on a leash. Starting from the well-known mechanical properties of…
Descriptors: Science Instruction, Mechanics (Physics), Inquiry, Scientific Concepts