This is an inclined plane. The definition of an inclined plane is a sloping surface . Itmakes the job shown here easier by reducing weight that the man has to push.The part of the picture that is this simple machine is the ramp.
This is a lever. The definition of a lever is a straight board that pivots on its fulcrum.The seesaw is the lever because the fulcrum is the middle part and the top part tilts upand down. It helps by letting children have FUN!
This is a pulley. The definition of a pulley is that a pulley uses grooved wheels and arope to raise or lower a load and or an object. In the picture the pulley is a metalballChain that ,when pulled, goes over a small grooved wheel and pulls up something thatSomehow connects the circuit and causes the light bulb to turn on. The kinetic energyis changed to electric energy when the circuit is completed and then it is changed toLight. It helps to turn on the light.
This is a screw. The definition is a inclined plane wrapped around a cylinder or shaft.In the picture the screw is the bottle cap. It helps by making the job of opening the bottleeasier.Google Earth.lnk
This is a wedge. The definition is two inclined planes back to back.The wedge in the picture is the thing sticking up. It helps by doing your cosmetic needs!
This is a wheel and an axel. The definition is a wheelwheels connected by a long rod, orCylinder. The wheel + axel in the picture is the wheels on the library cart thingy. it helpsThose poor librarians who have to transport large amounts of books to shelves.They get help by having it roll so you can use less pressure to push.