The formula for calculating the extension of a spring is: extension = (force applied to the spring)/(spring constant).
The spring constant is a measure of the stiffness of a spring, and it is represented by the letter "k". It is a constant value that is unique to each spring and is determined by factors such as the material and shape of the spring.
To measure the force applied to the spring, you will need a force measuring device such as a spring scale. Simply attach the spring to the scale and pull on it to determine the force applied.
The units used for the spring constant depend on the units used for the force and extension. For example, if the force is measured in Newtons and the extension is measured in meters, then the units for the spring constant will be N/m (Newtons per meter).
Yes, this formula can be used for any type of spring as long as the force applied to the spring is within the elastic limit, meaning the spring is not permanently deformed. It also assumes that the spring is linear, meaning its extension is directly proportional to the applied force.