  It was shown that pedal coordinates provides natural framework in which to
study force problems of classical mechanics in the plane. A trajectory of a
test particle under the influence of central and Lorentz-like forces can be
translated into pedal coordinates at once without the need of solving any
differential equation. We will generalize this result to cover more general
force laws and also show an advantage of pedal coordinates in certain
variational problems. These will enable us to link together many dynamical
systems as well as problems of calculus of variation. Finally -- as an
illustrative example -- we will apply obtained results to compute orbits of
Solar sail and Dipole drive.
