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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.Solution : Zero, because the body after attaining terminal velocity will continue moving with same velocity through the viscous medium.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.
Table of Contents
What is the acceleration of a body falling through a viscous medium?
Solution : Zero, because the body after attaining terminal velocity will continue moving with same velocity through the viscous medium.
When a spherical body falls through a viscous fluid it experience a viscous force?
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.
Steel Ball Dropped in a Viscous Fluid
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What is it when your body falls in liquid with terminal velocity?
When a body falling through a viscous medium attains terminal velocity, the apparent weight of the body is balanced by the viscous force due to the medium. Therefore, the weight of a body falling with terminal velocity is zero.
When a body falls through a fluid it drags the layer?
Strokes law: When a body falls through a fluid it drags the layer of the fluid in contact with it. A relative motion between the different layers of the fluid is set and, as a result, the body experiences a retarding force.
What is the acceleration of a body falling through a viscous fluid after reaching at terminal velocity?
After terminal velocity is reached, the net acceleration of the body falling through a fluid is zero because the body after attaining terminal velocity will continue moving with same velocity through the viscous medium.
When a body moving through a viscous liquid acquires terminal velocity Its acceleration is?
Solution : When a falling body attains terminals velocity its acceleration becomes zero.
When a sphere falling in viscous fluid attains the terminal velocity then?
the net force acting on the sphere is zero.
See some more details on the topic When body is dropped in a viscous fluid? here:
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What are the forces acting on a sphere falling through viscous medium?
In the case of a sphere falling through a viscous medium, it attains terminal velocity when buoyant force becomes equal to force of gravity.
What are the forces acting on a small spherical body falling through a viscous medium?
The viscous force ‘F’ acting on a small sphere falling through a medium depends upon radius ‘T’ of the sphere, its velocity ‘V’ through fluid and coefficient of viscosity ‘n’ of the fluid. Using dimensional analysis derive the formula for the viscous force.
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When a body is falling under action of gravity with terminal velocity The acceleration is?
Terminal velocity is achieved, therefore, when the speed of a moving object is no longer increasing or decreasing; the object’s acceleration (or deceleration) is zero.
When the body moves with terminal velocity The acceleration in the body become?
At the terminal velocity, the downward force of gravity is canceled by the upward force of air resistance, and the net acceleration of the body is zero.
How will the weight of a body be affected?
As the object accelerates (usually downwards due to gravity), the drag force acting on the object increases, causing the acceleration to decrease. At a particular speed, the drag force produced will equal the object’s weight (mg).
How does a body attain terminal velocity when it is dropped from rest in a viscous medium?
when a body move downward in a liquid then on that body the viscous force of liquid { in upward direction} , the byouant force {in upward direction,} and the weight of the body {in downward direction} these forces acts . when these three forces cancel the effect of each other than the body acquired terminal velocity.
Why does a body falling freely in a medium acquire this velocity?
As the body falls through a medium, its velocity goes on increasing due to the force of gravity acting on it. Thus, the opposing viscous or drag force, which acts upwards, also goes on increasing.
How does viscous drag change with speed of the objects?
Instead, viscous drag increases, slowing acceleration, until a critical speed, called the terminal speed, is reached and the acceleration of the object becomes zero. Once this happens, the object continues to fall at constant speed (the terminal speed).
How much is the resultant force on a sphere when it attains terminal velocity?
The object is not accelerating any more. It has reached its terminal velocity and is falling at a steady speed. The resultant force is zero because the frictional force acting against it is now the same as the weight of the object.
Terminal Velocity of an Object Moving Through a Viscous Fluid – GCSE Physics
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What is terminal velocity Class 11?
Terminal velocity is defined as the highest velocity attained by an object falling through a fluid. It is observed when the sum of drag force and buoyancy is equal to the downward gravity force acting on the object. The acceleration of the object is zero as the net force acting on the object is zero.
What is viscosity in liquid?
Viscosity is a measure of a fluid’s resistance to flow.
A fluid with low viscosity flows easily because its molecular makeup results in very little friction when it is in motion. Gases also have viscosity, although it is a little harder to notice it in ordinary circumstances.
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