Increasing and Reducing Friction
Increasing and Reducing Friction: Overview
This topic covers concepts, such as Reducing Friction Using Ball Bearing, Methods to Increase Friction, Advantages of Rolling over Sliding, Rolling Friction, Methods to Decrease Friction, and Using Lubricants between Contact Surfaces.
Important Questions on Increasing and Reducing Friction
It will be _____ (easier/ difficult) to walk on soapy water poured on the marble floor.
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.
Applying lubricants to surfaces of machines reduce the friction between them.
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?
