ZIMSEC O Level Combined Science Notes: The strength of Materials
- A beam should be made of stronger material so that it can support a greater load
- Different materials have different strength
- Some material is greater when put under stress by compression forces
- for example bricks and concrete
- Some material is strong when put under tensile forces
- For example metals e.g. copper, iron and steel
- Some material is strong under shear forces
- For example metal
- The strength of a material thus depends on the way in which the force is applied
- It is difficult to break materials such as bricks by applying compression forces
- For example it is not easy to break wood with a hammer
- Bricks can be easily broken apart if they are pulled (tensile forces)
- Metals are not easily broken by pulling them apart.
- Some metals such as copper can also handle shear forces
To access more topics go to the Combined Science Notes page.