FLUIDS AT REST AND IN MOTION
CONTENT
- Properties of Fluids at Rest
- Definition and Effects of Surface Tension
- Experiment to Demonstrate Surface Tension
- Methods of Reducing Surface Tension
- Effects of Surface Tension
- Capillarity
- Definition of Capillarity
- Illustration of Capillarity
- Demonstration of Capillary Action
- Explanation of Capillarity
- Cohesive and Adhesive Forces
- Diffusion of Gases
- Osmosis
- Viscosity
- Terminal Velocity
- Applications of Surface Tension and Viscosity
- Basic Assumptions of the Kinetic Theory of Matter (Gases)
Properties of Fluids at Rest
Definition and Effects of Surface Tension
Surface tension can be defined as the force per unit length normal or perpendicular to a line on the surface of a liquid.
Surface tension exists because of the molecular attraction between the liquid molecules. Consider a vessel of water with molecules P and Q as shown in the figure below
Molecular Forces in a Liquid
Molecule Q is attracted by equal number of molecules all around and so it is in a state of equilibrium.
You are viewing an excerpt of this lesson. Subscribing to the subject will give you access to the following:
- NEW: Download the entire term's content in MS Word document format (1-year plan only)
- The complete lesson note and evaluation questions for this topic
- The complete lessons for the subject and class (First Term, Second Term & Third Term)
- Media-rich, interactive and gamified content
- End-of-lesson objective questions with detailed explanations to force mastery of content
- Simulated termly preparatory examination questions
- Discussion boards on all lessons and subjects
- Guaranteed learning