Advantages and disadvantages of friction
Answers
Explanation:
Advantages of Friction:
Friction is responsible for many types of motion.
It helps us walk on the ground.
Brakes in a car make use of friction to stop the car.
Asteroids are burnt in the atmosphere before reaching Earth due to friction.
It helps in the generation of heat when we rub our hands.
Disadvantages of friction:
It always resists the motion, so extra energy is required to overcome it.
It causes wear and tear of machines.
It decreases the life expectancy of moving parts of vehicles.
Since friction is very useful in some cases while harmful in some cases, friction is called a necessary evil.
Answer:
Advantages :
1. friction able us to walk.
2.it help to support ladder against walk.
3.object can be piled up without slipping.
4. breaks of vehicles work due to friction.
Disadvantages :
1. It causes wear and tear of machines .
2. It decreases the life expectancy of moving parts of the vehicles .
3. Its always resists the motion , so extra energy is required to overcome it .
4. Friction is also called as necessary evil .
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