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Density Formula:
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Object density calculation using water displacement is a fundamental method in physics and materials science to determine the density of an object by measuring its mass and the volume of water it displaces when submerged.
The calculator uses the density formula:
Where:
Explanation: This method is based on Archimedes' principle, which states that the buoyant force on an object is equal to the weight of the fluid it displaces.
Details: Density measurement is crucial for material identification, quality control, buoyancy calculations, and determining material purity and composition in various scientific and industrial applications.
Tips: Enter the mass of the object in grams and the volume of water displaced in cubic centimeters. Ensure both values are positive numbers for accurate calculation.
Q1: Why use water displacement for density measurement?
A: Water displacement provides an accurate method to measure the volume of irregularly shaped objects that cannot be easily measured with rulers or calipers.
Q2: What are typical density values for common materials?
A: Water = 1.0 g/cm³, aluminum = 2.7 g/cm³, iron = 7.87 g/cm³, gold = 19.3 g/cm³, wood = 0.3-0.9 g/cm³ (varies by type).
Q3: How do I measure displaced volume accurately?
A: Use a graduated cylinder, record initial water level, submerge object completely, and record the new water level. The difference is the displaced volume.
Q4: What if the object floats in water?
A: For floating objects, you need to use a sinker or alternative method since they don't fully displace water equal to their volume.
Q5: Are there limitations to this method?
A: The method assumes the object is impermeable, doesn't absorb water, and is completely submerged without air bubbles.