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Subjects
Science CBSE
Class 8
Friction
Textbook questions
7.
Long answer
Exercise condition:
4
m.
Give examples to show that friction is both a friend and a foe.
a
. Friction is beneficial to
fast
slow down
or halt any moving thing.
b
. Friction acting on the fluids is
fluid friction
solid friction
.
c
. Friction produces
cooling
heat
.
d
. Friction can be reduced using
oil
both
lubricants
.
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