Answer to Question #250472 in Physics for Tithi

Question

Show that the surface tension of a liquid is equal to the mechanical part of its energy

Answer 1

As we know, the surface tension coefficient can be expressed as

$$T=\frac Fl.$$

The surface tension coefficient expressed in terms of area and surface energy is

$$T=\frac E{\Delta A}.$$

Thus, the surface tension of a liquid is equal to the mechanical part of its energy.