Increasing and Reducing Friction
Increasing and Reducing Friction: Overview
This topic covers concepts, such as, Reducing Friction Using Ball Bearing, Methods to Increase Friction, Using Lubricants between Contact Surfaces & Polishing the Contact Surfaces etc.
Important Questions on Increasing and Reducing Friction
Friction can be reduced to zero.
Write the name for the materials like oil and grease which are applied on a surface to reduce friction.
Which of the following substance can reduce the force of friction?
A boy rolled a rubber ball on a wooden surface. The ball travelled a short distance before coming to rest.
To make the same ball travel longer distance before coming to rest, he may
Rolling friction is slightly greater than the sliding friction.
_____ (Talcum powder/Sand) is sprinkled on the carrom board to reduce friction.
Oil applied to a surface to reduce friction better serves as a :
Lubricants are used to increase friction.
Rolling _____ (reduces/increases) friction.
Why do we spray powder on carrom board?
