• The spring scale
• How to measure a weight or a force
• Let’s learn how to use forces in a wise way
• Equilibrium of a rod pivoted on its centre
• Simple machines
• Levers
• The fixed pulley
• The mobile pulley
• Simple hoist
• Pulleys in parallel
1 Rod with hook
1 String
1 Folding metal rod 70 cm
1 Pivot with wing-nut
1 Tripod base
1 Bosshead 13 mm
1 10 masses 50g with 2 hooks
1 Lever rod
2 Pulleys in parallel
2 Simple pulleys
2 Pulleys in series
1 Spring