Understanding the Work Done by Spring Force in Physics
Explore how spring force works and the energy involved in compression and stretching.
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The work done by the spring force is not zero. When a spring is compressed or stretched, it either stores or releases energy. The work done is determined by the formula: W = 1/2 k x², where 'k' is the spring constant and 'x' is the displacement from the equilibrium position.
FAQs & Answers
- What is the work done by a spring force when it is compressed or stretched? The work done by a spring force is calculated using the formula W = 1/2 k x², where 'k' is the spring constant and 'x' is the displacement from the equilibrium position. This work is not zero when the spring is either compressed or stretched.
- Does a spring store energy when compressed? Yes, a spring stores potential energy when it is compressed or stretched from its equilibrium position. This energy is released when the spring returns to its original shape.
- Is the work done by a spring force ever negative? Yes, the work done by a spring force can be negative depending on the direction of the displacement. For example, if a spring is compressed, the work done by the spring force when it returns to its equilibrium position is positive, while the work done against it is negative.
- How does the spring constant affect the work done? The spring constant 'k' is a measure of the stiffness of the spring. A higher spring constant indicates a stiffer spring, which requires more force to compress or stretch it, resulting in greater work done during the process.