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What is Fluid Friction? Video Lecture - Class 8

FAQs on What is Fluid Friction? Video Lecture - Class 8

1. What is fluid friction?

Ans. Fluid friction, also known as drag, is the resistance experienced by an object when it moves through a fluid medium, such as air or water. It is caused by the interaction between the object's surface and the molecules of the fluid it is moving in.

2. What factors affect fluid friction?

Ans. Several factors influence fluid friction. The speed of the object, the shape of the object, the density and viscosity of the fluid, and the surface roughness of the object all play a role in determining the amount of fluid friction experienced.

3. How does fluid friction affect the motion of objects?

Ans. Fluid friction opposes the motion of objects moving through a fluid medium. It acts in the opposite direction to the object's motion, reducing its speed and making it harder to move through the fluid. The higher the fluid friction, the greater the resistance experienced by the object.

4. Can fluid friction be reduced or eliminated?

Ans. While it is difficult to completely eliminate fluid friction, it can be reduced through various means. One way is by streamlining the shape of the object, which reduces the surface area in contact with the fluid. Additionally, using lubricants or oils can help reduce the friction between the object and the fluid.

5. How is fluid friction important in real-life applications?

Ans. Fluid friction has significant applications in various fields. In engineering, understanding fluid friction helps in designing efficient vehicles, aircraft, and ships. In sports, minimizing fluid friction is crucial for achieving faster speeds in swimming or cycling. It is also important in the design of pipelines and plumbing systems, where reducing frictional losses helps in improving the flow of fluids.

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Oct 12, 2025 Last updated

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