FeaturedPhysics

The Physics Philes, lesson 68: Cracking Under the Shear Pressure

Last week we started talking about stress and strain, and I attempted to explain tensile stress and strain. But did you know there are a whole two other types of stress and strain? There are! These stresses and strains are called bulk and shear. Let’s first tackle bulk stress and …

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FeaturedPhysics

The Phyisics Philes, lesson 67: I-Beam, You-Beam, We-All-Beam for…Physics!

So far in our discussion of equilibrium and elasticity we’ve focused solely on rigid bodies. But real life isn’t composed of only rigid bodies. There are squishy things and stretchy things. How on Earth are we supposed to deal with those? We need to talk about stress and strain. Stress …

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