Effective (submerged) unit weight

The Effective (submerged) Unit Weigth calculator computes the unit weight of a submerged object based on the saturated weight of the object and the density of the fluid (e.g. water).

INSTRUCTIONS: Choose units and enter the following:

• (m) This is the mass of the object
• (ρ_o) This is the density of the object
• (ρ_f) This is the density of the fluid.

Effective (submerged) Unit Weight (U_w): The calculator return the unit weight in kilograms.  However, this can be automatically converted to compatible units via the pull-down menu.

The Math / Science

The Effective (submerged) unit weight is a civil engineering equation for is basically a submerged unit weight.

The equation for Effective (submerged) unit weight is:

U_w = m • ( 1 - ρ_o/ρ_f)

where:

• U_w is the effective submerged unit weight
• m is the mass of the object
• ρ_o is the density of the object
• ρ_f is the density of the fluid