Stability Of Floating Bodies


In hydrostatics, the metacenter is an important point to be considered when assessing the stability of floating bodies. Stability refers to the ability of a ship to right itself from a heeled position. The metacenter is the intersection of the buoyancy vector and the vessel’s axis of symmetry at a certain heel.

The FM 100.14 unit can be used to study the stability of a floating body and to determine the metacenter graphically. In addition, the buoyancy of the floating body can also be determined. The experiment is easy to set up and is particularly suitable for practical work in small groups. The experiment is conducted in a tank filled with water. A transparent body with a rectangular frame cross-section is used as the floating body.

Clamped weights that can be moved horizontally and vertically make it possible to adjust the center of gravity and the heel. The position of the clamped weights can be read on scales. A clinometer indicates the heel. The accessory FM 100.14 is available as an optional extra for further experiments with different frame shapes.


  1. Investigating the stability of a floating body and determining the metacenter
  2. Transparent floating body with rectangular frame cross-section
  3. One horizontally movable clamped weight for adjusting the heel
  4. One vertically movable clamped weight for adjusting the center of gravity
  5. Clinometer with scale for displaying the heel
  6. Technical data
  7. Floating body
  8. L x W x H: 300x130x190mm
  9. Mast height: 400mm
  10. Horizontal scale: 180mm
  11. Vertical scale: 400mm
  12. Height scale of the floating body: 120mm
  13. Clinometer scale: ±30°


  • Floating body without clamped weights: approx. 2,7kg
  • Vertical clamped weight: 575g
  • Horizontal clamped weight: 196g
  • Tank for water: 50L