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physics.class-ph2022★ 3 cited
Swinging a playground swing: torque controls for inducing sustained oscillations
Sergiy Koshkin, Vojin Jovanovic
Models of a playground swing have been studied since the 1960s. However, in most of them, the position of the swinger is controlled directly. This simplifies the problem but hides…
physics.class-ph2017★ 3 cited
Realization of Nonholonomic Constraints and Singular Perturbation Theory for Plane Dumbbells
Sergiy Koshkin, Vojin Jovanovic
We study the dynamics of pairs of connected masses in the plane, when nonholonomic (knife-edge) constraints are realized by forces of viscous friction, in particular its relation t…