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The viscous force acting on a sphere is directly proportional to the following factors: Coefficient of viscosity (η). The radius of the sphere (r). The velocity of the object (v).The viscous force on a spherical body, when it moves through a viscous liquid, depends on the radius of the body, the coefficient of viscosity of the liquid and the velocity of the body.The viscosity of a material is affected by temperature, pressure, nature of fluid, velocity gradient , etc.
Table of Contents
Which of the following factors are responsible for the viscous force acting on a spherical body *?
The viscous force on a spherical body, when it moves through a viscous liquid, depends on the radius of the body, the coefficient of viscosity of the liquid and the velocity of the body.
Which of the following factors are responsible for the viscous?
The viscosity of a material is affected by temperature, pressure, nature of fluid, velocity gradient , etc.
The viscous force on a spherical body, when it moves through a viscous liquid, depends
Images related to the topicThe viscous force on a spherical body, when it moves through a viscous liquid, depends
What are the forces that applied on the falling sphere in the viscous fluid?
There are three forces acting on an object falling through a viscous fluid: its weight w, the viscous drag FV, and the buoyant force FB.
On which of these factors the viscous force acting on a spherical body does not depend?
Coefficient of viscosity does not depend on terminal velocity. Viscous force acts in opposite direction of velocity.
What is viscous force Class 9?
Viscous forces in a fluid are proportional to the rate at which the fluid velocity is changing in space.
What factors affect the viscosity of a substance?
What factors affect viscosity? Viscosity is resistance to flow. For liquids, typically the larger the intermolecular forces (IMF) the higher the viscosity. The other factors that affect viscosity are temperature and the shape of the molecule.
On what factors does the viscous force acting tangentially on a layer of liquid depend?
When liquid flows over flat surface, a backward viscous force acts tangentially to every layer. This force depends upon the area of the layer, velocity of the layer, and the distance of the layer from the surface.
See some more details on the topic Which of the following factors are responsible for the viscous force on a spherical body falling in a liquid? here:
Viscosity of a liquid – Stoke’s method (Viva voce) – OLabs
7), Which of the following factors are responsible for the viscous force acting on a spherical body? ; Radius of the spherical body. Terminal velocity of the …
Force of viscosity acting on a spherical body of radius class 11 …
Hint:A force may cause a mass object to change its velocity (which involves starting to move from a standstill), i.e. accelerate.The rate at which the fluid …
What factors affect viscosity of water?
Viscosity is influenced by the composition of the crude oil, the temperature, dissolved gas content, and the pressure. As temperature increases, the viscosity will decrease.
What are the factors affecting the viscosity of magma?
A magma’s viscosity is largely controlled by its temperature, composition, and gas content (see downloadable programs at the bottom of this page). The effect of temperature on viscosity is intuitive. Like most liquids, the higher the temperature, the more fluid a substance becomes, thus lowering its viscosity.
When a body is dropped in a viscous fluid?
CONCEPT: Terminal velocity: If a spherical body of radius r is dropped in a viscous fluid, it is first accelerated, and then its acceleration becomes zero and it attains a constant velocity called terminal velocity.
How does the terminal velocity of a spherical body falling in a viscous fluid depend on its volume?
Assertion : The terminal velocity of a spherical body falling in a fluid depends on the diameter and density of the body. <br> Reason : The terminal velocity of the body falling in a fluid does not depend upon the density of the fluid in which it falls.
What do you mean by viscous force?
The viscous force F in Eq. 16.21 is the fluid analog of the sliding friction force between two solid surfaces. For this reason, viscosity is often referred to as fluid friction. Like other frictional forces, viscous forces oppose the relative motion of adjacent fluid layers.
Determination of Coefficient of Viscosity of a Liquid using a Falling Ball Viscometer
Images related to the topicDetermination of Coefficient of Viscosity of a Liquid using a Falling Ball Viscometer
What is Stoke’s law give the factors on which viscous drag force on a body depends on?
Stoke’s Law states that the force that retards a sphere moving through a viscous fluid is directly proportional to the velocity and the radius of the sphere, and the viscosity of the fluid.
When a spherical body moves inside a viscous medium the viscous force is?
The viscous drag on a spherical body is given as F=6πηRV. Here η is the coefficient of viscosity, R is the radius of the sphere and V is its velocity.
What is viscous force Class 11?
Viscous force: It is the resistance (internal) force provided by a fluid when it is subjected to tangential force on its surface (shear). When a fluid flows across a surface, the particles of the flow near the surface adhere to it. As a result, the fluid’s relative velocity about the surface is zero.
What are viscous liquids?
Fluids that have higher viscosity are known as viscous fluid. Examples of viscous fluids are honey and ketchup. The fluid that has more flow resistance is referred to as viscous fluid. Viscosity is a fluid factor, which is the degree of the amount of resistance between the fluid layers.
How do you find the viscous force?
- F = η A d v d t.
- F = η A d t d v.
- F = η A d v d x.
- F = β A d v d t.
What do you mean by viscous liquid?
Viscosity is the resistance of a fluid (liquid or gas) to a change in shape or movement of neighbouring portions relative to one another. Viscosity denotes opposition to flow.
What are the 3 factors that affect viscosity?
- Fluid Temperature: Usually the viscosity of liquids decreases with an increase in temperature. …
- Flow Conditions: For laminar flow the viscosity of liquid remains constant while for turbulent flow viscosity changes.
- Pressure: With an increase in pressure, the viscosity of gases usually increase.
What factors affect viscosity quizlet?
What are the four factors that affect viscosity? Temperature, Concentration, Attractive Forces, Particle Size.
What factors contributes to low viscosity of a liquid?
Temperature has an effect on intermolecular forces: the higher the temperature, the greater the kinetic energies of the molecules and the greater the extent to which their intermolecular forces are overcome, and so the more fluid (less viscous) the liquid; the lower the temperature, the lesser the intermolecular forces …
What are the forces which are responsible for the viscosity of a liquid?
Cohesive forces are attractive forces exist between molecules of the same substance. So, cohesive forces are the main cause of viscosity.
Viscosity of Fluids Velocity Gradient – Fluid Mechanics, Physics Problems
Images related to the topicViscosity of Fluids Velocity Gradient – Fluid Mechanics, Physics Problems
How does the viscous force between two layers of a liquid depend upon the relative velocity between two layers?
Hint: Viscous drag is a force between any two layers of flowing liquid, when there is a relative motion between the two layers. The viscous drag opposes the relative motion between the two layers.
What is viscous force directly proportional to?
Viscous force is directly proportional to the thickness of liquid layer and velocity gradient.
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