Declared displaced-volume arithmetic

Buoyancy force

Inputs

Declared fluid densityρfConstant user-entered displaced-fluid density; stratification and property lookup are excluded.

Declared displaced volumeVdUser-entered displaced volume at the stated immersion condition; geometry is not inferred.

Declared object massmUser-entered mass used only for gravitational-weight comparison.

Constant-density buoyant force

117.68

Declared object gravitational weight

98.066

Buoyancy minus declared weight

19.613

Mass of declared displaced fluid

FB = ρf·g·Vd; W = m·g; Fnet = FB − W

A first-pass number, not a code check, certification, or approval. Read the method and its limits below. What this is and is not.

Calculation snapshot

Formula version 1.0.0

Constant-density buoyant force	117.68 N
Declared object gravitational weight	98.066 N
Buoyancy minus declared weight	19.613 N
Mass of declared displaced fluid	12 kg

FB = ρf·g·Vd · W = m·g · Fnet = FB − W

Embry-Riddle fluid statics reference: https://eaglepubs.erau.edu/introductiontoaerospaceflightvehicles/chapter/fluid-statics/

This printout is a record of displayed inputs and deterministic formula output. It is not an approval, certification, or engineering conclusion.

Method

Calculate constant-density buoyant force, object weight, and their net-force difference.

FB = ρf·g·Vd; W = m·g; Fnet = FB − W

When

Don’t

This is constant-density displaced-volume force arithmetic only. It does not determine float or vessel stability, immersion equilibrium, free-surface effects, restoring moments, geometry, structural adequacy, material selection, pressure rating, installation conditions, safety, or approval.