A universal joint is a flexible pivot point in a rigid rod that allows the rod to “bend” in any direction. It consists of a pair of hinges located close together, oriented at 90° to each other, connected by a cross shaft, and is commonly used on automobiles and trucks.
What Is An Universal Joint And Where Is It Used?
The video below unveils the physics behind the U-Joint in a simple and illustrative way with help of animation.
Check it out!