Question

write three merits and demerits of friction​

Answer 1

Answer:

Advantages of Friction:

1. Friction is responsible for many types of motion

2. It helps us walk on the ground

3. Brakes in a car make use of friction to stop the car

Disadvantages of Friction:

1. Friction produces unnecessary heat leading to the wastage of energy.

2. The force of friction acts in the opposite direction of motion, so friction slows down the motion of moving objects.

3. Forest fires are caused due to the friction between tree branches.

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Answer 2

Answer:

The three merits and demerits of friction are:-

Explanation:

1. It always resists the motion, so extra energy is required to overcome it

2. It causes wear and tear of machine

3. It decreases the life expectancy of moving parts of vehicles

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