Buoyancy & Archimedes' Fluid Displacement Calculator
Calculate buoyant force, percentage submerged, and payload reserve capacity in fresh vs salt water.
Input Parameters
Calculation Results
Formula & How Buoyancy & Archimedes' Fluid Displacement Calculator Works
Archimedes' Principle states that an object immersed in a fluid experiences an upward buoyant force equal to the weight of the fluid it displaces. If the average density is less than the fluid, it floats.
- Enter Object / Hull Mass (kg): Input your target parameter value.
- Enter Object Total Volume (m³): Input your target parameter value.
- Enter Fluid Density: Input your target parameter value.
- Apply Formula: Calculate using
Buoyant Force F_b = ρ_fluid × V_displaced × g | Submerged % = (ρ_obj / ρ_fluid) × 100. - Review Results: View exact computed answers, metrics, and worked mathematical proofs.
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Frequently Asked Questions (FAQs)
Why do heavy steel ships float in the ocean?
Although steel is dense (7,850 kg/m³), the ship's hollow hull encloses vast air pockets, making the average density of the entire vessel much lower than seawater (1,025 kg/m³).
Why do boats float higher in saltwater than freshwater?
Seawater contains dissolved salts and is denser (1,025 kg/m³) than freshwater (1,000 kg/m³), providing greater buoyant force per cubic meter of hull displacement.
Authoritative Standards & Verified Reference Citations
Calculations and mathematical logic on this page are grounded in published statutory rules, regulatory standards, and official government data published by the following bodies:
Open government data, scientific datums, and public sector mathematical reference datasets.
Australia's national authority on physical, chemical, and biological metric measurement standards.
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