Grade 10Mechanics
What is the source of the energy that allows a fluid in a capillary (e.g., a thin, hollow, glass tube) to rise?
What is the source of the energy that allows a fluid in a capillary (e.g., a thin, hollow, glass tube) to rise?
1 Answer
Jitender Pal
The source of energy that allows a fluid in a capillary to rise is the surface tension.
Every fluid tends to contract its surface due to its intermolecular forces arising from its molecules. It is known as surface tension. Surface tension is also equal to the surface potential energy per unit area of the surface of the fluid. When capillary tube is immersed in a fluid, the surface potential energy makes the liquid to rise in the tube.
Every fluid tends to contract its surface due to its intermolecular forces arising from its molecules. It is known as surface tension. Surface tension is also equal to the surface potential energy per unit area of the surface of the fluid. When capillary tube is immersed in a fluid, the surface potential energy makes the liquid to rise in the tube.
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