Free Buoyancy Force Calculator
Calculate the buoyant force on a submerged object using Archimedes' principle.
kg/m^3
m^3
Buoyant Force
490.5 N
Equivalent Mass Supported50.00 kg
Buoyant Force vs Fluid Density (rho)
Archimedes' Principle
Any body submerged in a fluid experiences an upward buoyant force equal to the weight of the displaced fluid.
Formula
F_b = rho_fluid x g x V_displaced
where rho_fluid is the fluid density, g = 9.81 m/s^2, and V_displaced is the volume of fluid pushed aside by the object. An object floats when the buoyant force equals its weight.
Example Calculation
A 0.05 m^3 object fully submerged in water (1000 kg/m^3).
- 01F_b = 1000 x 9.81 x 0.05 = 490.5 N
- 02Equivalent mass = 1000 x 0.05 = 50 kg
- 03If the object weighs less than 490.5 N, it will float.
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