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Introduction - Friction Video Lecture - Class 8
FAQs on Introduction - Friction Video Lecture - Class 8
| 1. What is friction? |  |
Ans. Friction is the force that opposes the motion of an object when it comes into contact with another object or surface. It acts in the opposite direction of the motion.
| 2. What are the different types of friction? | |
Ans. There are mainly four types of friction: static friction, sliding friction, rolling friction, and fluid friction. Each type of friction depends on the surfaces in contact and the motion involved.
| 3. How does friction affect the movement of objects? | |
Ans. Friction can either help or hinder the movement of objects. It can provide traction to prevent slipping or sliding, but it can also slow down the motion of objects by converting kinetic energy into heat.
| 4. What factors affect the amount of friction between two surfaces? | |
Ans. The amount of friction between two surfaces depends on factors such as the roughness of the surfaces, the force pushing the surfaces together, and the type of material the surfaces are made of.
| 5. How can friction be reduced or increased? | |
Ans. Friction can be reduced by using lubricants or smoother surfaces, while it can be increased by increasing the force pushing the surfaces together or making the surfaces rougher.
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