Buoyancy
Buoyancy, abbreviated as B, is when a liquid applies upward force on an object that is completely submerged or floating.
Buoyancy Types
- Positive buoyancy - when the liquid force is greater than the object weight displacement.
- Negative buoyancy - when the liquid force is less than the object weight displacement.
- Neutral buoyancy - when the liquid force is equal to the object weight displace
Buoyancy formula |
||
\(\large{ B = \rho\; g \; V }\) | ||
Symbol | English | Metric |
\(\large{ B }\) = buoyancy force | \(\large{ lbf }\) | \(\large{N}\) |
\(\large{ V }\) = displaced volume | \(\large{ ft^3 }\) | \(\large{ m^3 }\) |
\(\large{ \rho }\) (Greek symbol rho) = fluid density | \(\large{\frac{lbm}{ft^3}}\) | \(\large{\frac{kg}{m^3}}\) |
\(\large{ g }\) = gravitational acceleration | \(\large{\frac{ft}{sec^2}}\) | \(\large{\frac{m}{s^2}}\) |
Buoyancy formula |
||
\(\large{ B = \rho \;g \;h\; A }\) | ||
Symbol | English | Metric |
\(\large{ B }\) = buoyancy force | \(\large{ lbf }\) | \(\large{N}\) |
\(\large{ \rho }\) (Greek symbol rho) = fluid density | \(\large{\frac{lbm}{ft^3}}\) | \(\large{\frac{kg}{m^3}}\) |
\(\large{ g }\) = gravitational acceleration | \(\large{\frac{ft}{sec^2}}\) | \(\large{\frac{m}{s^2}}\) |
\(\large{ h }\) = height of liquid displaced by a floating object | \(\large{ ft }\) | \(\large{ m }\) |
\(\large{ A }\) = surface area of object | \(\large{ ft^2 }\) | \(\large{ m^2 }\) |
Tags: Liquid Equations Hydraulic Equations Buoyancy Equations