vääntömomento

Vääntömomento, also known as torque in English, is a measure of the force that can cause an object to rotate about an axis. It is a vector quantity, meaning it has both magnitude and direction. The magnitude of torque is determined by the force applied, the distance from the axis of rotation to the point where the force is applied, and the angle between the force vector and the radius vector.

The formula for calculating torque (T) is:

T = r × F

where r is the radius vector (the distance from the axis of rotation to the point where the force is applied), and F is the force vector. The cross product (×) indicates that the torque vector is perpendicular to both r and F, and its magnitude is given by:

|T| = |r| × |F| × sin(θ)

where θ is the angle between r and F.

Torque is commonly used in various fields, including mechanics, engineering, and physics. It is a crucial concept in understanding rotational motion and is used to analyze and design machinery, vehicles, and other rotating systems. In everyday life, torque is also relevant in activities such as turning a doorknob or pedaling a bicycle.