What is the difference between capillary action and surface tension?
What is the difference between capillary action and surface tension?
The surface tension acts to hold the surface intact. Capillary action occurs when the adhesion to the surface material is stronger than the cohesive forces between the water molecules. Water wants to stick to the glass and surface tension will push the water up, until the force of gravity prevents further rise.
What are the two properties of a liquid that are associated with capillary action?
Capillary action occurs because water is sticky, thanks to the forces of cohesion (water molecules like to stay close together) and adhesion (water molecules are attracted and stick to other substances).
What is the relation between the liquid type and the surface tension?
When an object is placed on a liquid, its weight Fw depresses the surface, and if surface tension and downward force becomes equal than is balanced by the surface tension forces on either side Fs, which are each parallel to the water’s surface at the points where it contacts the object.
Which of the following is an application of surface tension?
Explanation: Use of soaps and detergents as cleansing agents, molecular structure can be elucidated by surface tension measurements through parachor values and surfactants are incorporated in preparations like toothpaste are the applications of surface tension.
What is a simple definition of surface tension?
Surface tension could be defined as the property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of the water molecules.
What is unit of surface tension?
Newton per metre
How do you find tension with angle and force?
The formula for tension in a rope attached to a weight at an…
- T1 sin(a) + T2 sin(b) = m*g ———-(1) Resolving the forces in x-direction: The forces acting in x-direction are the components of tension forces T1 and T2 in opposite directions.
- T1cos(a) = T2cos(b)———————(2) Solving equations (1) and (2), we get the formula for tension.
- T2 = [T1cos(a)]/cos(b)]
Why does a massless string have the same tension throughout?
The correct answer is that because there is no net force on the mass, the horizontal component of the tension in the two attached strings must be the same, and because the angle that the string makes with the vertical is the same, the tensions at points 1 and 2 are equal.
How do you calculate tension in a cable?
We can think of a tension in a given rope as T = (m × g) + (m × a), where “g” is the acceleration due to gravity of any objects the rope is supporting and “a” is any other acceleration on any objects the rope is supporting.
Why is tension the same?
Since we observe that a tense rope is stationary and completely still then it must be that every small piece of the rope has a zero net force. Thus, the pull on the left will propagate, without loss, through the length of the rope. And the tension is thus the same everywhere.