3 FLYOVERS
fasten?
A pulley.
pulley
lever
simple machines are used by being pulled or pushed
An airplane is not a simple machine. A lever is a simple machine. A wheel is a simple machine. Any machine that can be described by a mathematical formula is a simple machine.
There are many advantages of flyovers. For example, flyovers help to streamline the traffic control system by helping to reduce traffic congestion. With urban road development, flyovers assist in creating additional road space overhead.
A winch.
wedge
Wool
because they are very important to the world and we use them everyday such as a wheel and axle that are used on doorknobs.