pöördemomendile

Pöördemoment, often translated as torque, is a twisting force that tends to cause rotation. It is a fundamental concept in physics and engineering, crucial for understanding how objects rotate and how forces cause them to turn. Mathematically, torque is defined as the product of the force applied and the perpendicular distance from the pivot point to the line of action of the force. This distance is known as the lever arm. The unit of torque in the International System of Units (SI) is the newton-meter (Nm).

The concept of torque is observable in everyday situations. For example, when opening a door, applying force to the doorknob, which is at a distance from the hinges (the pivot point), creates torque, causing the door to rotate. Similarly, a wrench used to tighten or loosen a bolt applies torque to the bolt. In engines, the torque produced by the crankshaft determines the engine's ability to rotate and power a vehicle. Torque is a vector quantity, meaning it has both magnitude and direction. The direction of the torque is typically described as either clockwise or counterclockwise relative to the axis of rotation. Understanding and calculating torque is essential for designing and analyzing rotating machinery, from simple tools to complex mechanical systems.