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physics.class-ph2020
Huygens' cycloidal pendulum: an elementary derivation
Riccardo Borghi
A pedagogical derivation of the Huygens cycloidal pendulum, suitable for high-school students, is here presented. Our derivation rests only on simple algebraic and geometrical tric…
physics.class-ph2020
From Kepler's laws to Newton's law: a didactical proof
Riccardo Borghi
An elementary derivation of the Newton "inverse square law" from the three Kepler laws is proposed. Our proof, thought essentially for first-year undergraduates, basically rests on…