Specification:
The speed control is used to adjust the frequency of applied force for
resonance, so a greater degree of variance is possible. Includes
manual.
show vibration of an object when repeated
impulses are applied, this demonstrator consists of two weights of
different natural frequencies, two cams driven by a 6V motor with speed
control, and four springs.
Size 30 x15 x 45cm Power source not included
