Explanation The sum of vertical forces on the square metal sheet is ∑ F y = T − m g − F y = 0 ⇒ T = m g + F y . The vertical component of the surface tension force F y = γ ( 2 L ) cos ϕ since the force is two sided. Now the force of tension is modified as T = m g + γ ( 2 L ) cos ϕ . Use the conditions when ϕ = 0 ° the force of tension would be T 1 = m g + γ 2 L and T 2 = m g − 2 γ L for the angle contact ϕ = 180 ° . These two equations of tensions, the surface tension of the fluid is determined. Given info : The side of the square metal sheet is 3.0 cm The tensions on the square metal are 0.40 N and 0.39 N . The formula for the surface tension of the fluid is, γ = T 1 − T 2 4 L T 1 and T 2 are tensions

11th Edition

ISBN: 9781305952300

Author: Raymond A. Serway, Chris Vuille

Publisher: Cengage Learning

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Question

Chapter 9, Problem 49P

To determine

The surface tension of the fluid.

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Chapter 9 Solutions

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The surface tension of the fluid.

Solution Summary: The author explains how the surface tension of the fluid is determined using two equations of tensions.

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The surface tension of the fluid.

Chapter 9 Solutions