Tilavuuspainoksi

Tilavuuspainoksi, often translated as specific weight or weight density, is a physical property of a substance. It represents the weight of a unit volume of that substance. Mathematically, it is defined as the ratio of the weight of a body to its volume. The formula for tilavuuspainoksi is typically expressed as γ = W/V, where γ is the tilavuuspainoksi, W is the weight, and V is the volume.

The unit of tilavuuspainoksi in the International System of Units (SI) is newtons per cubic meter (N/m³). In other systems, it might be expressed in units like pounds per cubic foot (lb/ft³) or pounds per cubic inch (lb/in³). It is important to distinguish tilavuuspainoksi from density, which is mass per unit volume. While closely related, tilavuuspainoksi incorporates the effect of gravity, as it is based on weight rather than mass.

The tilavuuspainoksi of a substance can vary with temperature and pressure, although these effects are often negligible for solids and liquids under normal conditions. Gases, however, exhibit more significant changes in tilavuuspainoksi with variations in temperature and pressure. This property is crucial in various engineering and scientific applications, such as determining the buoyant force acting on submerged objects and calculating the stability of structures. For example, in civil engineering, tilavuuspainoksi is used to calculate the load exerted by construction materials.