Quick Answer: Slotted Masses are stamped weight discs that slide onto a hanger for loading springs, pulleys and balances in mechanics practicals. Each disc has its nominal value stamped on it.
Last updated: October 2026
Key Features
Nominal value stamped on each disc
Slots with rounded interior edges so discs slide on and off without jamming
Used on a hanger with a suspension loop at the upper end and a stop-disc flange at the base
About This Product
Slotted masses are used to apply known loads in experiments on force, Hooke’s law, the Atwood machine, centre of gravity and turning moments. The hanger’s own mass is added to the discs to give the total suspended mass. Schools, colleges and institutes in Albania, Botswana, Antigua and Barbuda, South Korea, Kazakhstan and Liberia can order the Slotted masses from Educational Instrument.