MEDIUM
8th CBSE
IMPORTANT
Earn 100

Give examples to show that friction depends on the nature of two surfaces in contact.
 

Important Questions on Friction

MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 12 - Friction>Long Answer Type Questions>Q 67
Give an example to show that friction depends on the force with which the two surfaces are pressed together.     
 
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 12 - Friction>Long Answer Type Questions>Q 68
What is the difference between static friction and sliding friction? For a given pair of objects, which of the two is greater?
 
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 12 - Friction>Long Answer Type Questions>Q 68
How can a very heavy machine be moved conveniently from one place to another in a factory? (No crane is available for this purpose). 
 
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 12 - Friction>Long Answer Type Questions>Q 69
What is drag? Give two examples of a drag force.
 
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 12 - Friction>Long Answer Type Questions>Q 69
How can you reduce the drag on something moving through the air?
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 12 - Friction>Long Answer Type Questions>Q 70
What is meant by 'streamlined shape'? Name an object which usually has a streamlined shape.
 
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 12 - Friction>Long Answer Type Questions>Q 70
Explain why, objects moving in fluids should have streamlined shape.
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 12 - Friction>Multiple Choice Questions (MCQs)>Q 71
A boy runs his toy car on dry marble floor, wet marble floor, newspaper and towel spread on the floor. The force of friction acting on the car on different surfaces in increasing order will be: