Consider a Timoshenko beam that is clamped to an axis perpendicular to
the axis of the beam.
We study the problem to move the beam from a given initial state
to a position of rest, where the movement is controlled by the angular
acceleration of the axis to which the beam is clamped.
We show that this problem of controllability is solvable if the time of
rotation is long enough and a certain parameter
that describes the material of the beam
is a rational number
that has an even numerator and an odd denominator or vice versa.