Increasing and Reducing Friction
Increasing and Reducing Friction: Overview
This topic covers concepts such as Rolling Friction, Methods to Decrease Friction, Using Lubricants between Contact Surfaces, Polishing the Contact Surfaces, Reducing Friction Using Ball Bearing, Methods to Increase Friction, etc.
Important Questions on Increasing and Reducing 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.
Lubricant oils are used as fuel in vehicles and kitchen.
_____ (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?
