TY - GEN AU - López Camino, Rafael AU - Perdomo, Óscar PY - 2020 UR - http://hdl.handle.net/10481/68378 AB - We investigate the problem of determining the planar curves that describe ramps where a particle of mass m moves with constant-speed when is subject to the action of the friction force and a force whose magnitude F(r) depends only on the distance r... LA - eng KW - Ramp KW - Central force field KW - Friction force KW - TreadmillSled TI - Constant-speed ramps for a central force field DO - 10.3934/dcds.2021003 ER -