1. Some tools use more than one single machine to work.
2. It is called a complex machine.
3. The following are some examples of complex machine and their simple machine components :-
a)Wheelbarrow
- Lever, wheel and axle
b) Bicycle
- Lever, gears, wheel & axle
c) Egg beater
- Gear, wheel & axle
d) Scissor
- Lever & wedge
e) Crane
- Lever, pulley and gear
f) Hand drill
- Screw, wedge, wheel & axle
