If you are designing a product that requires any sort of smart-motion precision, spring parts that apply constant force or constant resistance are key mechanical design elements to consider. Two of ...

Here, k is called the spring constant and represents how stiff the spring is. The value s describes how far the spring is stretched or compressed from the equilibrium position.

The spring constant The spring constant, k, is different for different objects and materials. It is found by carrying out an experiment. For example, the unloaded length of a spring is measured.

A physics video claims rubber bands don't act like springs. But is that true? Dot Physics blogger Rhett Allain tests the notion with a few custom contraptions.

Constant Force Springs from Lee Spring offer an excellent mechanism for applications where a constant load is required. Some of the many applications of constant force springs are in counterbalances, ...

Learn about and revise shape-changing forces, elasticity and the energy stored in springs with GCSE Bitesize Physics.