Forces on materials
- Created by: markalex
- Created on: 10-01-15 11:00
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- Forces on materials
- Compression and tension
- Forces are measured in newtons (N)
- A force is neither a push or a pull
- When objects bend, one par is in tension while another part is in compression
- Hooke's Law
- When metals, made into springs and wires, stretch they follow a pattern
- 'The extension is is directly proportional to the force applied'
- When the weight is removed, it springs back to it's orginal length.
- Tensile breaking strength and stress
- Wires, as well as springs, also obey Hooke's Law, up their elastic limit.
- Applying more force will eventually break he wire
- A wire with high tensile strength resists stretching
- Steel cable, to support bridge structures and ships' anchors, needs to be both corrosion resistant and strong
- Compression and tension
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