Spring Balance – Force & Weight Measurement Instrument

When an object is suspended from the hook, its weight causes the spring to extend. Within the spring’s working range, the extension is related to the applied force, allowing the force to be read from the graduated scale. This makes a spring balance useful for demonstrating the relationship between force and spring extension.

Least Count

The least count is the smallest measurement that can be read from the instrument’s scale. For example, if a spring balance has a least count of 0.1 N, it can distinguish readings in increments of 0.1 N.

Knowing the least count is important when recording experimental observations because it indicates the measurement resolution of the instrument. Students can use the least-count value when taking readings and analysing results from physics experiments.

Applications

• Measuring force
• Measuring the weight of objects
• Studying spring extension
• Physics laboratory experiments
• Classroom demonstrations
• Practical studies involving force and gravity

Conclusion

The Spring Balance is a simple and useful laboratory instrument for measuring force and weight. Understanding its least count helps students take and record measurements appropriately during practical physics experiments.