# How Do You Make Spring Scale Science Projects?

A spring scale is a weighing scale used to measure pulling force. Experiments for which a spring scale can be used include determining the volume of irregular objects, measuring the leverage provided by pulleys, and exploring engineering load safety. These experiments are all suitable as science projects. Measuring Irregular Volume Step 1 Weigh an object hanging from a spring scale in air, and then weigh the same object submerged in water. Step 2 Take the difference between the weights. Step 3 Convert this difference to grams. For example, 1 kilogram is 1,000 grams and 1 pound is 454 grams. The number of grams equals the number of cubic centimeters of the object, which is the volume. This calculation follows Archimedes’ principle and the fact that water weighs 1 gram per cubic centimeter. Archimedes’ principle states that the buoyant force on a submerged object equals the weight of the water it displaces. Mechanical Advantage Step 1 Attach the bottom hook of a spring scale to a load. A