Chapter - 2 Friction

Q&A -Ask Doubts and Get Answers

Q
Friction

Question:

Give examples to show that friction is both a friend and a foe.

Answer:

Advantages of the friction:

(i) If there is no friction we will not be able to walk or run on the ground.

(ii) Matchstick lights due to friction.

Disadvantage of the friction:

(i) The soles of shoes wear out due to the force of friction.

(ii) Friction produces heat in machines. This heat can damage some parts of the machines.


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