Question

why a drop of liquid under no external forces attains a spherical shape?

Answer 1

Because it tends to acquire minimum surface area because of the presence of surface tension. The area of sphere is minimum for a given volume. Hence, under no external forces, liquid drop alerts always take spherical shape.

Answer 2

Because it tends to acquire minimum surface area because of the presence of surface tension. The area of sphere is minimum for a given volume. Hence, under no external forces, liquid drop alerts always take spherical shape.