A Spring Balance is a simple instrument used to measure force, weight, or tension based on the principle of Hooke’s Law, which states that the force applied to a spring is proportional to its extension. Spring balances are commonly used in classrooms, laboratories, and in various applications that require measurement of small forces or weights.
1. Measuring Capacity:
- Weight Range (Maximum Capacity): Typically, spring balances are available in a range of capacities, such as:
- 50g, 100g, 200g, 500g, 1000g , or higher, depending on the intended use.
- For example, a 100g Spring Balance can measure up to 100 grams (0.1 kg) or approximately 1 Newton of force under Earth’s gravity.
2. Graduation (Scale Increments):
- Graduation (Divisions): The scale is divided into smaller units, typically 1g, 2g, 5g, 10g, depending on the total range of the balance.
- Higher precision models may have 0.5g or 1g divisions.
- The scale might be in grams (g) for weight measurement or Newtons (N) for force measurement.
- Accuracy/Tolerance: The accuracy is often ±1 division, meaning it can be off by 1g or so in measurements. More precise models might have a tolerance of ±0.5g.
3. Units of Measurement:
- Grams (g): Most spring balances are designed to measure weight or force in grams.
- Newtons (N): For measuring force directly, some spring balances include both grams and newtons on the same scale.
- 1 Newton is approximately equal to 100 grams under Earth’s gravity.
4. Spring Material:
- High-Quality Steel: The spring in a spring balance is typically made from stainless steel or carbon steel to ensure durability, consistent elasticity, and minimal rusting or corrosion.
- Plastic Casing: The body is typically made of durable plastic
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