Choose the correct answer.
1. An example of device that uses a wheel and an axle is the saw.
True
False
2. A wheelbarrow uses the wheel and axle as well as the lever system.
True
False
3. A simple machine is a tool that allows us to use less force to do work.
True
False
4. A screw is an example of a simple machine.
True
False
5. Gear is used to lift a heavy load.
True
False
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