Class 8 Exam > Class 8 Videos > Science Class 8 > What is Friction?
What is Friction? Video Lecture | Science Class 8
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FAQs on What is Friction? Video Lecture - Science Class 8
| 1. What is friction? |  |
Ans. Friction is a force that opposes the relative motion or tendency of motion between two surfaces in contact with each other.
| 2. What are the types of friction? | |
Ans. There are mainly four types of friction: static friction, sliding friction, rolling friction, and fluid friction.
| 3. What factors affect friction? | |
Ans. The factors that affect friction include the nature of the surfaces in contact, the roughness of the surfaces, the force pressing the surfaces together, and the presence of any lubricants.
| 4. How does friction affect motion? | |
Ans. Friction acts in the opposite direction to the applied force, slowing down or stopping the motion of objects. It can also cause objects to heat up due to the energy lost in overcoming friction.
| 5. How can friction be reduced? | |
Ans. Friction can be reduced by using lubricants, polishing or smoothing the surfaces, using wheels or ball bearings, and minimizing the force pressing the surfaces together.
About this Video
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Nov 23, 2024 Last updated |
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