simple machines
by Tomoki OTAKA
1. pulley
1.1. pull
2. wheel and axle
2.1. 2types
2.1.1. wheel turns and axle stops
2.1.2. wheel
3. lever
3.1. up and down
3.2. balance
3.3. lift
4. wedge
4.1. cut
4.1.1. sharp things
2.1.1. wheel turns and axle stops
2.1.2. wheel
4.1.1. sharp things