TF9.2 Strength of Surface Tension

This is comprised of a big ring submerged into a dish of soap water. The ring is suspended by strings leading to a spring, and the dish is supported by a labjack. As the labjack is lowered, the surface tension pulls the ring down and stretches the spring. After some distance, the ring breaks free of the surface. The distance the labjack was lowered can be measured and, knowing the spring constant, the force of the surface tension can be determined.

Equipment Location: F24