Skyway Avenue

1.lever

2.inclined plane

3.screw

4.wheel and axle

5.wedge

6.pulley

Lets tak about it one by one:

1.lever

Lever s anything that help to move objects especially heavy one.

There are three classes of levers representing variations in the location of the fulcrum and the input and output forces.

First-class levers
Examples:
Seesaw (also known as a teeter-totter)
Crowbar
Pliers (double lever)
Scissors (double lever)

Second-class levers
Examples:
Wheelbarrow
Nutcracker (double lever)
The handle of a pair of nail clippers

Third-class levers
Examples:
Human arm
Tongs (double lever) (where hinged at one end, the style with a central pivot is first-class)
Catapult

2.inclined plane

An Inclined plane or a ramp is one of the basic machines. It reduces the force necessary to move a load a certain distanc'e up by providing a path for the load to move at a low angle to the ground. This lessens the needed force but increases the distance involved, so that the amount of work stays the same.

3.screw

A screw is a specialized application of the wedge or inclined plane. It contains a wedge, wound around an interior cylinder or shaft, that either fits into a corresponding plane in a nut, or forms a corresponding plane in the wood or metal as it is inserted.

4.wheel and axle

The wheel and axle consists of a handwheel (a disc or lever arm with a handle) which turns an axle around which a chord is wound.

Examples of wheel and axles are:
Bicycles, Ferris wheels, gears, wrenches, door-knobs and steering wheels.

5.wedge

A wedge is a simple machine used to separate two objects, or portions of objects, through the application of force. A wedge is made up of two inclined planes. These planes meet and form a sharp edge. This edge can split things apart. Wedges are used as either separating or holding devices.

6.pulley

This simple machine is made up of a wheel and a rope. The rope fits on the groove of the wheel. One part of the rope is attached to the load. When you pull on one side of the pulley, the wheel turns and the load will move. Pulleys let you move loads up, down, or sideways. Pulleys are good for moving objects to hard to reach places. It also makes the work of moving heavy loads a lot easier.

Examples of where pulleys can be used:
Flag Poles
Clothes Lines
Sailboat
Blinds
Crane