Podcast
Play an AI-generated podcast conversation about this lesson
Questions and Answers
What is the purpose of treaded soles on shoes and tires?
What is the purpose of treaded soles on shoes and tires?
- To increase friction (correct)
- To improve aerodynamics
- To reduce friction
- To eliminate friction
Why do kabaddi players rub their hands with soil?
Why do kabaddi players rub their hands with soil?
- To increase the smoothness of the skin
- To improve grip by increasing friction (correct)
- To reduce friction with opponents
- To eliminate friction completely
What effect does adding powder to a carrom board have on friction?
What effect does adding powder to a carrom board have on friction?
- Increases friction
- Decreases friction (correct)
- Causes no change in friction
- Eliminates friction
Why is it not advisable to use oil as a lubricant in some machines?
Why is it not advisable to use oil as a lubricant in some machines?
Signup and view all the answers
How does the application of oil, grease, or graphite between moving machine parts reduce friction?
How does the application of oil, grease, or graphite between moving machine parts reduce friction?
Signup and view all the answers
Can friction be entirely eliminated by polishing surfaces?
Can friction be entirely eliminated by polishing surfaces?
Signup and view all the answers
