List three disadvantages of friction. (2024)

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List three disadvantages of friction.? ›

Friction is a force that resists the relative motion between two objects or materials. The causes of this resistive force are molecular adhesion, surface roughness, and deformations. Adhesion is the molecular force resulting when two materials are brought into close contact with each other.

Friction is a force that resists the relative motion between two objects or materials. The causes of this resistive force are molecular adhesion, surface roughness, and deformations. Adhesion is the molecular force resulting when two materials are brought into close contact with each other.

The advantage of friction is it is used in automobile brakes in order to stop the vehicle and it is important for us to walk on the earth. The disadvantage of friction is it causes more heat which results in a waste of energy.

Friction generates excessive heat, resulting in energy waste. A sum of investment is spent on avoiding friction as well as the mileage that it causes by adopting procedures such as lubricating. Because friction works in the reverse orientation of movement, it decreases the movement of shifting.

Slow down the speed:- In the roller skating, Rolling shoes and smooth surfaces are used to minimize friction. Makes movement difficult :- Friction can make the job more difficult when one has to move the other object. Excess friction can make it difficult to slide a box across the floor, walk through deep snow.

How can friction be harmful? ›

A lot of heat is generated by friction in various mechanical parts, which wastes energy as heat. Restricts motion, requiring more energy to overcome it. Making noise while operating a machine wastes energy and is annoying. Friction between tree branches is what ignites forest fires.

Answer: In any type of vehicle—such as a car, boat or airplane—excess friction means that extra fuel must be used to power the vehicle. In other words, fuel or energy is being wasted because of the friction. Fluid friction or air resistance can greatly reduce the gas mileage in an automobile.

Friction is said to be a necessary evil because it is useful as well as harmful. Friction helps us to walk, write, hold things, lift objects. So it is necessary for our lives. Without friction, many essential processes can not be done.

It is a necessary phenomenon as it helps to stop a moving body. It also helps in reducing the velocity of a fast-moving body. It helps us keep our balance between our legs and the ground on a slippery surface. It can be used for the purpose of converting one form of energy into another.

Friction prevents us from moving fast, makes it harder to get things done efficiently and makes us slower.

Heat is generated at this surface of contact due to the opposing force of friction. This causes wear and tear on the material of the moving body. Hence, more work is required to put on a moving body so that it can overcome the force of friction and move forward.

The most common harmful friction happening is the grazed knee or elbow when you trip and land on a hard rough surface. Another is rope burn which can be very scarring. If you're sliding down a rope to save your life, there's no way you can save your hand. Ouch!