As a chemical engineering student, I never expected to learn the physics behind why sausages usually split lengthwise. Sausages are actually very similar to pipes, and I learned about pipes. A sausage has a casing and its content/stuffing inside. A pipe has a wall with a thickness, and it's hollow so fluids can flow inside. They are both cylindrical. In a sense, a sausage is a pipe. When there is stuff inside a pipe, it pushes on all sides of the inside of the pipe and creates stress. If we nerd out with calculus and physics, we can examine the...