Question

give examples to show that friction is both a friend and a foe​

Answer 1

Examples to show that friction is a friend and a foe: Friction is friend: (i) Friction allows us to grip and catch different objects. (ii) It helps us to walk comfortably on the surface. (iii) It helps to minimize the speed or to stop the moving objects. ... Friction is foe: (i) Friction causes wear and tear in objects.

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Friction is friend (Advantages) :

(i) Friction allows us to grip and catch different objects.

(ii) It helps us to walk comfortably on the surface.

(iii) It helps to minimise the speed or to stop the moving objects.

(iv) It helps us to write on paper or blackboard.

(v) The things do not move from their places due to friction.

Friction is foe (Disadvantages) :

(i) Friction causes wear and tear in objects.

(ii) It causes damage the parts of machines.

(iii) The machines or tools require regular maintenance due to which a lot of money is wasted.

(iv)It reduces the speed of moving objects so more force is required.

(v)It does not allow the free movement of objects.

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Answer 2

Hello Friend,

I hope You understand this

Answer:

Advantages of the friction

• Due to friction, we are able to walk.

• We are able to write because of the friction between the tip of the pen and paper.
• Friction allows us to grip and catch different objects.
• It helps to minimise the speed or to stop the moving objects.
• The things do not move from their places due to friction.

Disadvantages of friction

• Because of friction, the tires and soles of shoes wear out.

• Friction produces heat between different parts of the machines. This can damage the machines.
• It reduces the speed of moving objects so more force is required.
• It does not allow the free movement of objects.