- How can friction be unhelpful?
- What happens if you increase friction?
- Is it possible to have no friction?
- What if there was no friction for 1 minute?
- What happens when friction is reduced to zero?
- Where is friction a problem?
- What happens if there is no friction?
- Where friction is not useful?
- What will happen if friction disappears from the earth give at least 5 examples?
- Can a car move without friction?
- How is friction harmful examples?
- How can unhelpful friction be reduced?
How can friction be unhelpful?
Friction can also be unhelpful.
If you do not lubricate your bike regularly with oil, the friction in the chain and axles increases.
When there is a lot of friction between moving parts, energy is transferred to the surroundings, causing heating.
Think of what happens when you rub your hands together quickly..
What happens if you increase friction?
Friction causes the molecules on rubbing surfaces to move faster, so they have more energy. This gives them a higher temperature, and they feel warmer.
Is it possible to have no friction?
No, exactly zero friction isn’t possible practically. But we can get very close to it by using having very flat and even surfaces, ball bearings, lubricants etc. Having zero friction means that there is no interaction between the two surfaces in contact, but there is no way we can avoid such interaction completely.
What if there was no friction for 1 minute?
Anything you were holding on to, at the moment friction ceased to exist, would instantly fall to the ground or fly out of your hand. If you were walking when friction disappeared, your legs would still work, but you wouldn’t go anywhere.
What happens when friction is reduced to zero?
No we cannot reduce friction to zero because friction exists at even atomic levels too.
Where is friction a problem?
A number of problems can be caused by friction between two objects or materials. Since friction is a resistive force that slows down or prevents motion, it can be a nuisance, because it can hinder motion and cause the need for expending extra energy.
What happens if there is no friction?
A frictional force exists when two objects come in contact with each other. It opposes motion, meaning if something is sliding on the floor, friction is the force that makes it eventually come to a stop. In a world without friction, the object would continue to slide forever, if not acted on by another force.
Where friction is not useful?
Friction is sometimes unhelpful. Your bike will be noisy and difficult to pedal. When there is a lot of friction between moving parts, energy is lost to the surroundings as heat. Think of what happens when you rub your hands together quickly. The friction warms them up.
What will happen if friction disappears from the earth give at least 5 examples?
1: You will not be able to write. 2: No riding cycle, bike and not even a car or bus. 3: No machines in companies and so no mechanics. 4: You would have not been able to sit, walk, run or dance.
Can a car move without friction?
So, even though friction is often thought of as the force that opposes the motion of an object, the motion of a car would not be possible without friction! Friction may slow the car down as it moves along the road, but it also is the force that enables the car to move forward at all.
How is friction harmful examples?
Disadvantages of Friction Friction causes moving objects to stop or slow down. Friction produces heat causing wastage of energy in machines. Friction causes wear and tear of moving parts of macinery, soles of shoes, etc.
How can unhelpful friction be reduced?
There are several ways to reduce friction:The use of bearing surfaces that are themselves sacrificial, such as low shear materials, of which lead/copper journal bearings are an example.Replace sliding friction with rolling element friction, such as with the use of rolling element bearings.More items…