Podcast
Questions and Answers
What method is used to reduce friction by sprinkling boric acid powder on a carrom board?
What method is used to reduce friction by sprinkling boric acid powder on a carrom board?
- Making the surface smooth (correct)
- Increasing roughness of the surface
- Creating irregularities on the surface
- Introducing more friction
How does polishing help in reducing friction between two objects?
How does polishing help in reducing friction between two objects?
- Decreases friction by evening out irregularities (correct)
- Creates more irregularities on the surfaces
- Intensifies friction by making surfaces stickier
- Increases friction by adding roughness
What is the purpose of using ball bearings in reducing friction in machines?
What is the purpose of using ball bearings in reducing friction in machines?
- To maintain the nature of motion as sliding
- To increase roughness between surfaces
- To reduce friction by changing motion from sliding to rolling (correct)
- To increase sliding friction
Why are ball bearings and rollers effective in reducing friction?
Why are ball bearings and rollers effective in reducing friction?
In reducing friction, what effect does powder have when sprinkled on a surface?
In reducing friction, what effect does powder have when sprinkled on a surface?
Flashcards
Boric Acid Powder on Carrom Board
Boric Acid Powder on Carrom Board
Reduces friction by creating a smoother surface on the carrom board.
Polishing
Polishing
Reduces friction by smoothing out irregularities on surfaces.
Ball Bearings
Ball Bearings
Ball bearings reduce friction by changing sliding motion to rolling motion.
Why Ball Bearings Reduce Friction
Why Ball Bearings Reduce Friction
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Effect of Powder on Friction
Effect of Powder on Friction
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Study Notes
Friction Reduction Methods
- Sprinkling boric acid powder on a carrom board reduces friction by providing a smooth, lubricating surface for the pieces to move on.
- Polishing two objects in contact helps reduce friction by removing surface roughness and allowing them to slide smoothly against each other.
- Ball bearings are used in machines to reduce friction by providing a smooth, rolling motion instead of sliding friction.
- Ball bearings and rollers are effective in reducing friction because they minimize the contact area and allow for easy rolling motion, reducing the force required to move objects.
- Powders, such as boric acid, sprinkled on a surface reduce friction by providing a layer of lubrication, allowing objects to move smoothly with less resistance.
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