Fluid resistance is a general term describing the extent to which a rubber product retains its original physical characteristics and ability to function when it is exposed to oil , chemicals, water, organic fluids or any liquid which it is likely to encounter in actual service.
What is fluid friction Class 11?
When a body moves through a fluid which may be liquid or air, there is interaction between molecules of fluid and the body which tries to resist the motion of the body through that fluid . This is called fluid friction.
What is fluid friction answer?
Fluid friction is a force that restricts the movement either within itself or of another medium moving through the liquid . ... It describes the friction between the layers of the viscous liquid that moves relative to each other. The internal resistance to flow is termed as viscosity.
What is fluid friction Class 8 with example?
There is a friction whenever an object moves through a fluid .It is called fluid friction. ... When an object moves through water, it pushes the water out of the way and the water pushes back on the object. This push of water on the moving object creates fiction which tends to slow down the moving object.
What is fluid friction and examples?
Explore a few examples to see fluid friction in action. Air pushing against your hand when you stick it out the window of a car (external) Water pushing against a swimmer’s body as they move through it (external) The movement of your coffee as you stir it with a spoon (external) Sucking water through a straw (internal)
What is the formula for fluid friction?
When an object moves through a fluid with velocity v, presenting area A to the fluid, the molecules that bounce off the object transfer momentum to the object at rate Δp/Δt = F , where F is the resulting drag force.
What are the disadvantages and advantages of friction?
- Friction helps us to walk on the ground.
- We can write on a paper or on a board due to friction.
- Friction helps in stopping a vehicle on applying the brakes.
- It helps in generating heat when we rub our hands together.
Why does water reduce friction?
Whether water acts as a lubricant or not depends on the nature of the two surfaces. For water to reduce friction, it must reduce the contact area between two surfaces by separating them and acting as a barrier . It can only do this if neither surface is absorptive, otherwise the water won’t remain between them.
Which type of friction is the weakest?
Rolling friction is the weakest kind of friction. It is the force that resists the motion of an object rolling across a surface.
What is friction in the air called?
In fluid dynamics, drag (sometimes called air resistance, a type of friction, or fluid resistance, another type of friction or fluid friction) is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid.
What is the another name of fluid friction?
What is another name for fluid friction? Fluid friction is the force that tries to slow objects down when they move through a liquid or a gas. It’s also known as “ drag”, or “air resistance” .
What is friction give an example?
Friction is a force between two surfaces that are sliding, or trying to slide, across each other. For example, when you try to push a book along the floor , friction makes this difficult. Friction always works in the direction opposite to the direction in which the object is moving, or trying to move.
What is friction with example?
The force of friction is always exerted in a direction that opposes movement (for kinetic friction) or potential movement (for static friction) between the two surfaces. For example, a curling stone sliding along the ice experiences a kinetic force slowing it down.
What are the 2 types of friction?
There are two main types of friction, static friction and kinetic friction . Static friction operates between two surfaces that aren’t moving relative to each other, while kinetic friction acts between objects in motion.
How do you calculate water resistance?
| d = orifice diameter (inches) | C v = flow coefficient |
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