The Circular Motion Kit Mini Electric with Speed Control is used for mechanical experiments on circular motion in classrooms. It allows controlled swinging of a mass in a circular orbit, with measurements taken on orbit diameter, projectile mass, and revolutions per minute. Kit Includes: Motor and disc, mounted on support tube with cable and banana plugs. 3 x Special rubber masses, approx. 20mm diam x 4g, 25mm diam x 8g, 32mm diam x 16g, with measurement reference line, mass in grams marked on each and loop for attachment to light chain or cord. 3 x Pieces of very light alloy chain cut to different lengths 4 x Metal clips to connect each chain to a mass and the motor disc 1 x Set of experiment notes (by Bruce Saunders) *speed controller integrated with motor drive, compatible with both AC and DC Read Instruction Sheet Read Experiment Sheet Product Code: SE.MF0848-001 Brand: IEC Dimensions: 475mm (L) x 75mm (W) x 65mm (H) Weight: 0.33 kg mmm: