HARD
8th CBSE
IMPORTANT
Earn 100

Arrange the following in increasing order of their magnitude.
Force of friction in rough surfaces and force of friction in smooth surfaces.

Important Questions on Friction

HARD
8th CBSE
IMPORTANT
Start Up Science>Chapter 10 - Friction>Some Questions from NCERT>Q 1

What do you understand by the term drag? Is it different from fluid friction?

HARD
8th CBSE
IMPORTANT
Start Up Science>Chapter 10 - Friction>Some Questions from NCERT>Q 2

Classify the following as methods of reducing or increasing friction.(a) Sand and gravel
(a) Sand and gravel
(b) Oil and grease
(c) Wheels and ball bearings
(d) Brake pads and treaded tyres
(e) Streamlining

EASY
8th CBSE
IMPORTANT
Start Up Science>Chapter 10 - Friction>EXERCISES>Q 1
Write some usefulness of friction.
HARD
8th CBSE
IMPORTANT
Start Up Science>Chapter 10 - Friction>EXERCISES>Q 2
What are the disadvantage of friction?
MEDIUM
8th CBSE
IMPORTANT
Start Up Science>Chapter 10 - Friction>EXERCISES>Q 3
Explain how lubricants help in reducing friction?
EASY
8th CBSE
IMPORTANT
Start Up Science>Chapter 10 - Friction>EXERCISES>Q 4
Define the term sliding friction.
EASY
8th CBSE
IMPORTANT
Start Up Science>Chapter 10 - Friction>EXERCISES>Q 4
Define the term static friction.
EASY
8th CBSE
IMPORTANT
Start Up Science>Chapter 10 - Friction>EXERCISES>Q 4
Define the term: Drag.