# Surface Tension Formula

Surface tension is a word which is linked to the liquid surface. It is a physical property of liquids, in which the molecules are drawn onto every side. This is a type of dragging force per unit length. On the surface of the liquids, there is no other molecules surround each atom. So the surface later layer gets attracted inwards. **The formula for finding surface tension** is articulated as,

Where

the force per unit length is *F*

the length in which force act is *L*

**Surface Tension Solved Examples**

Solved numerical related to surface tension are provided underneath:

**Problem 1: **Compute the surface tension of a given liquid whose dragging force is 5N and length in which the force acts is 2cm?

**Answer:**

Known values are,

F = 5N and L = 2cm

Formula for surface tension is,

**Problem 2: **Compute the surface tension if the force and length are 3N and 1.5cm respectively?

**Answer:**

Known values are,

F = 3N and L = 1.5cm