The surface tension of a liquid is to be measured using a liquid film suspended on a U-shaped wire frame with an 8-cm-long movable side. If the force needed to move the wire is 0.024 N, determine the surface tension of this liquid in air.
Surface tension is the elastic tendency of a fluid surface which makes it acquire the least surface area possible.
Surface tension of liquid is the force per unit length.σs =
In this case surface tension is is measured using a liquid film suspended on U shaped wire frame with an 8cm long movable side shown below
So the surface tension
Where L is the length of the movable side
The reason for the term is because the film has two sides
Textbook: Fluid Mechanics
Author: Yunus A. Cengel, John M. Cimbala
Since the solution to 98P from 2 chapter was answered, more than 1635 students have viewed the full step-by-step answer. This textbook survival guide was created for the textbook: Fluid Mechanics, edition: 2. Fluid Mechanics was written by and is associated to the ISBN: 9780071284219. The full step-by-step solution to problem: 98P from chapter: 2 was answered by , our top Engineering and Tech solution expert on 07/03/17, 04:51AM. The answer to “The surface tension of a liquid is to be measured using a liquid film suspended on a U-shaped wire frame with an 8-cm-long movable side. If the force needed to move the wire is 0.024 N, determine the surface tension of this liquid in air.” is broken down into a number of easy to follow steps, and 45 words. This full solution covers the following key subjects: liquid, surface, tension, Wire, move. This expansive textbook survival guide covers 15 chapters, and 1547 solutions.