What three simple machines have we talked about already? What is an example of each one?
What is a Force?
What is a Load?
A Screw
A screw is a long thin metal shaft with threads spiraling along its lengths.
It makes rotational (spinning movement) into linear movement (backwards and forewords)
It is a type of fastener.
The closer the threads, the stronger the hold and the more force it takes to put a screw into a material.
Tell me:
What is a screw?
How does it work?
Is it a fastener and why?
What are three things screws are used for?
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