To investigate the relationship between the mass of the body, the stiffness of the spring and the periodic time or frequency of the oscillation of a spring-mass system having one degree of freedom.
(a) Vibrations induced
by applying a periodic disturbing force to the mass. In this experiment
the exciter unit is driven from a gearbox via a flexible coupling such
that one revolution of the contra rotating discs is equal to one
revolution of the phase recorder.
(b) Vibrations induced by a periodic displacement of the point of support of the spring. In this experiment a connecting rod, driven by an eccentric, imparts a such that on revolution of the eccentric is equal to one revolution of the phase recorder.
Optional equipments :