Question

Why friction is both good and evil write it point vide

Answer 1

Hey friend!
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Here is your answer
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# What is friction ?

<> Friction occurs when two objects are rubbed against each other. 

<> It is a contact force.

#How is friction useful?

<> Friction helps us to walk and write.

<> Friction helps an object to stop and change direction.

<> Friction helps us to light a matchstick and tie a knot.

# How is friction evil ? 

<> Friction produces heat between machinery and causes wastage of energy.

<> Friction wears out objects like shoes and ball bearings.
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