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Grade 12th passMechanics

Why is the direction of surface tension in the derivation in bubbles and drops along the circumference against the excess pressure?

Profile image of kunal mehta
12 Years agoGrade 12th pass
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1 Answer

Profile image of Arun Kumar
12 Years ago
The surface tension acts inwards towards the whole body of the liquid. It will act at 90 degrees to the surfece. If the surface is curved, it is at 90 degrees to the tangent to the surface.