simple machines

1. pulley

1.1. A pulley is a simple machine that lifts heavy loads. pulleys are very helpful because if you have to lift something heavy you can use a pulley.

1.2. if you use two pulleys it will be much easier to lift then using one pulley because there is more gravity.

1.3. A pulley is a simple machine that works by a wheel and axle and a rope over it. if you pull on the other end it will lift the load up.

2. inclined plane

3. wedge

3.1. A wedge is a simple machine that split things apart.A wedge is two inclined plane. A wedge woks by spliting things apart when there is a crack and makes the crack bigger as it goes in. A wedge split things, slice things, And cut things.

4. wheel and axle

4.1. A wheel and axle is a simple machine that transports things that are heavy for example a person. you see wheels most of the time on vehicles because wheels are for transporting things and vehicles transport things. if we didn't have wheels a axles we wouldn't be able to transport very easily.

4.2. A wheel and axle works by a wheel and axle. the wheel has no friction so it can turn well. the axle has to be in the medal of the wheel so it can turn.

5. lever

5.1. A lever is a simple machine that lifts heavy loads. a lever has a fulcrum, load, and even effort. there are three kinds of lever and they are called fist class levers, second class levers, and finally third class levers. A lever works by a fulcrum and holds the balance then put a load on one end then push down on the other end then it will lift the load up. lever's are almost everywhere. They are even in your house for example on handles, and on toilets.

6. screw

6.1. A screw is a simple machine that sticks things together. a screw has a wedge that makes a hole just the right size and glows it together. the wedge of the screw works by making a hole and making the hole bigger as it goes in. A screw also has a inclined plane around it so it is easy to screw it into something.