Primary 7A were asked to solve this problem from their novel ‘The Garbage King’;
Dani and Mamo are desperate for clean water. They have found a well however it is too deep for them to access the water. Can you create a pulley system to help Mamo and Dani?
The pupils found out that the more pulleys that were added the less effort would be required to move the load (the water). When a single pulley was added to move 600ml, 600g of effort was required. When a double pulley was added to move 600ml, 300g of effort was required. When a triple was added to move 600ml, 200g of effort was required to move the load.