Question

10 benefits and disadvantages of FRICTION

Answer 1

Advantage of Friction:

1) Friction enables us to walk without slipping
2)It enables a car to move on road without skidding.
3)It enables us to apply brakes and slow down or stop a moving car.
4) It enables us to write and draw on paper.
5) It enables us to pick up and hold things in our hands.
6) Nails can be fixed in a wall due to friction.
7) It enables us to light a matchstick.
8) It enables us to cut wood with saw.

Disadvantages of Friction:

1) Friction Slow Down motion.
2) it reduces the efficiency of machine .
3) it produces heat which may damage machines.
4) it wears out steps of staircase in buildings and foot over bridges.
5) it wares out the brake pad of vehicle gradually.
6) it wears is out the rubbing machine parts.
7) the tyres of vehicles Wear are out gradually due to Friction.
8) it wear away the soles of our shoes.

Answer 2

Answer: 10 benefits and disadvantages of FRICTION

Explanation:

Advantages

1. It enables the brakes to stop the car and the locomotive to pull the train.
2. Friction helps us to walk, friction between our feet and the ground assists us to walk without slipping.
3. Friction makes gripping objects possible.
4. It helps in the rotation of the various parts of the machine.
5. The ladder stays on the wall without slipping or skidding because of friction between the ladder.
6. It is used in grindstone to sharpen knives and chisels.
7. It enables a screw or a nail in place after being screwed into a position.
8. It is utilized in fan belts used over wheels or pulleys in machinery.
9. Brakes in a car make use of friction to stop the car
10. Asteroids are burnt in the atmosphere before reaching Earth due to friction.

Disadvantage

1. Friction causes wear and tear on machines and engine parts as they rub each other.
2. It reduces the efficiency of a machine. It wastes valuable energy by converting them to heat.
3. It reduces motion.
4. It causes the heating of engines. This is because the energy used to overcome friction is converted into heat.
5. Friction produces heat that causes objects to wear out.
6. Friction makes work tedious. Because of the resistance, workers need to exert more effort and energy both to accomplish their work and to overcome resistance.
7. Friction also causes sparks, overheating, and machine breakdown.
8. Friction reduces speed. Even airplanes cannot fly as fast as they are able because of air friction.
9. Friction can also make speeding objects tumble down and cause accidents.
10. Racing cars and other vehicles consume more energy to run fast and overcome the resistance of the roads.

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