Question

advantages and disadvantages of friction for class 8​

Answer 1

Answer:

Disadvantages of friction:

Friction produces a lot of heat in various parts of the machinery and this leads to wastage of energy as heat.

Opposes motion, hence more energy is needed to overcome friction.

Noise production in machines is irritating as well as leads to energy loss.

Forest fires are caused due to friction between branches of trees.

Explanation:

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Answer 2

Answer:

Advantages are,

• Friction produces heat
• Friction wears out the rubbing surface
• Friction causes wastage of energy.

Disadvantages are,

• Friction help us to walk
• Friction between two wheels and brakes slow down motion
• Friction helps burning match box.

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