Before you read this, I suggest you read post 21.21. If you’ve read post 2.21, you may wonder why anyone would be interested in torsion of a cylinder. The reason is that long, thin cylinders (rods) are used as shafts to transfer rotational motion in many different types of machines. The drivetrain of a car… Continue reading 21.22 Rotating shaft

Before you read this, I suggest you read post 20.19. Torsion is the deformation you apply when you start to remove a screw-top from a bottle. In the picture above, torsion is applied to a cylinder, with a fixed base, so that A moves to A’. O is the centre of the top face of… Continue reading 21.21 Torsion