Board: CBSE
Topic - Increasing and Reducing Friction
ASSIGNMENT
Question 1
Four children were asked to arrange forces due to rolling, static and sliding frictions
in a decreasing order. Their arrangements are given below. Choose the correct
arrangement.
a)
b)
c)
d)
Question 2
Chapter Name: Friction
Subject: Science (Physics)
Class: VIII
Rolling, static, sliding
Rolling, sliding, static
Static, sliding, rolling
Sliding, static, rolling
Fill up the blanks:
a) Sprinkling of powder on the carrom board __________ friction.
b) The substances which reduce friction are called __________.
c) Rolling friction is __________ than the sliding friction.
Question 3
Explain why the sole of our shoe is grooved?
Question 4
Why do we oil our bicycles regularly?
Question 5
What is rolling friction?
Question 6
How can friction be reduced?
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