Upthrust = Density of fluid × Volume of displaced fluid × Acceleration due to gravity

This can be written more concisely as:

U = ρVg

Where:

* U is the upthrust (measured in Newtons)

* ρ is the density of the fluid (measured in kg/m³)

* V is the volume of fluid displaced by the object (measured in m³)

* g is the acceleration due to gravity (approximately 9.81 m/s²)

Important Note:

* Upthrust is also known as buoyant force.

* The volume of fluid displaced is equal to the volume of the object submerged in the fluid.

* This formula applies to objects fully submerged in the fluid as well as partially submerged objects.