A set of single, double and triple plastic pulley blocks.
The pulley blocks can be used to demonstrate the reduced effort required to lift weights.
Age Range:Suitable for 5 to 11 years
12 Feb 2018
These are good for demonstrating the effect of several pulleys in the classroom, but students found the thin string slipped out of the shallow grooves very easily which made some experiments very complicated. Good value for the cost, though.