1. power
1.1. rate of doing work
1.1.1. power=work divided by time
1.1.1.1. watts
1.1.1.2. it doesn't have a motor its just electricity
1.1.1.3. light bulb, electricity
2. mechanical advantage
2.1. number of times a machine increases power
2.1.1. ima
2.1.1.1. output force divided by input force
2.1.1.1.1. pully, teater totter.
3. 3rd class levers
3.1. A lever in which the effort is placed between the fulcrum and the load.
3.1.1. fishing pole, car door, broom.
3.1.1.1. these machines are simple and don't need a motor for their job.
4. incline planes
4.1. a plane inclined at an angle to the horizontal.
4.1.1. a board with something taller than it holding the top up for you to push things up
4.1.1.1. you only need little materials and do not need a motor.
5. screw
5.1. a short, slender, sharp-pointed metal pin with a raised helical thread running around it and a slotted head, used to join things together by being rotated so that it pierces wood or other material and is held tightly in place
5.1.1. screw
5.1.1.1. all you have to do with this is screw it into something.
6. work
6.1. product of force and distance
6.1.1. Work = Force • Displacement
6.1.2. lifting weights, mowing lawns, building something.
6.1.2.1. in work you don't always need a motor on something to do work.
7. 1st class levers
7.1. The force applied to an object or machine to cause motion.
7.1.1. titter totter.
7.1.1.1. you do not need an engine for this simple machine
8. 2nd class levers
8.1. wheel barrowl,titter totter.
8.2. A lever in which the load lies between the fulcrum and the effort.
8.2.1. this simple machine only needs a wheel and poles.
9. wedge
9.1. a piece of wood, metal, or some other material having one thick end and tapering to a thin edge, that is driven between two objects or parts of an object to secure or separate them.
9.1.1. a tapering peice of wood or material
9.1.1.1. this simple machine is well... rather simple because its just a simple piece of material.
10. wheel and axle
10.1. A simple machine consisting of an axle to which a wheel is fastened so that torque applied to the wheel winds a rope or chain onto the axle, yielding a mechanical advantage equal to the ratio of the diameter of the wheel to that of the axle.
10.1.1. truck axle.
10.1.1.1. this simple machine is super easy and has no motor needed.
11. pulley
11.1. a wheel with a grooved rim around which a cord passes. It acts to change the direction of a force applied to the cord and is chiefly used (typically in combination) to raise heavy weights.
11.1.1. a pully
11.1.1.1. all yu need is the rope and pully... simple.