Cohesive Force in Physics | Definition, Examples – Surface Tension

Cohesive Force Definition:
The force of attraction acting between the molecules of same substance is called cohesive force.

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Cohesive Force in Physics | Definition, Examples – Surface Tension

Cohesive Force Example in Daily Life:
The force of attraction acting between the molecules of water, glass, etc.

• Water-Water
• Mercury-Mercury

1. Cohesive forces and adhesive forces are van der Waals’ forces.
2. These forces vary inversely as the eighth power of distance between the molecules.

Force of Surface Tension on Different Shape

Surface Tension:
In Physics, the tension of the surface film of a liquid because of the attraction of the surface particles by the bulk of the liquid, which tries to minimize surface area is called surface tension. When the surface of the liquid is strong enough, then surface tension is applicable. It is strong enough to hold weight.