0 relating to a system in which the person who does a particular job is regularly changed: --
Depending on the department, some recruits will participate in rotational placements.
The full threedimensional problem involving an arbitrarily given rotational symmetric external force field is considered for an arbitrary steady shear flow with vanishing axial velocity.
By supplying a winding action - rather than direct axial traction - rotational manoeuvres will achieve forward motion even without traction on the fetal head.
Local shear acts in addition to global magnetic shear, the latter being a result of radial variation of the rotational transform.
This latter quantity cannot in general be determined analytically for waves on a rotational flow.
The minimum radius obtained from the rotational solution is larger than obtained from the irrotational solution, even further narrowing the supersonic region of the vortex.
A flexible jointed link is attached to its rotational joint moving perpendicular to the horizontal plane, and its other joints are fixed.
We notice that the assumption of rotational symmetry of the perturbations has considerably reduced the amount of algebraic work involved.
The main expected challenges would be the selection of rotational coordinates and derivation of the appropriate mass matrix.
