answersLogoWhite

0


Best Answer

so you can cut things with no effort barely

The sharp blade is due to the fact that there are relatively very few layers of atoms in it. When it is applied to a surface, the pressure it exerts is large since the surface area is small.

User Avatar

Wiki User

βˆ™ 14y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

βˆ™ 11y ago

Fixed blades have the advantage of not needing to be lubricated. The closing mechanism otherwise loses it's smooth movement on folding blades. Fixed blades are also more durable and cheaper.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why does a knife have a sharp blade?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Why is a knife made of metal?

The steel blade of a knife will hold a sharp cutting edge.


Can you cut silicone?

You just need a very sharp blade, such as an X-acto Knife or a utility knife with a new blade to cut it.


What simple machine is a knife blade?

A knife blade is considered a wedge, which is a type of simple machine. When force is applied to the knife blade, it allows for the cutting of materials by separating them along the sharp edge.


Why a sharp knife cuts better than blunt knife?

area of the edge of the blade is smaller for a sharp knife. so for the same force the pressure under the blade will be greater and smaller force required to give the same pressure.


Why is a blunt edge more dangerous than a sharp knife?

"The sharp knife goes where you send it, the dull knife goes where it wants" is a reminder to keep your edges sharp. The dull blade is deflected by a hard material.


What is used for chopping?

A knife ! or anything that has a sharp blade on it either it is at the end or in the middle !


How is a paring knife made?

Knives commonly have the form of a handle, with a sharp blade on the end.


What is a round knife?

A round knife is a knife used to work with leather. It has an axe-like rounded blade that cuts leather with a rolling action of the sharp edge.


How were pencils sharpened before the sharpener?

pencils were sharpened using a knife or any sharp blade.


How come you can shave with a shaver but not with a sharp knife?

Razor blades are much thinner than a knife blade. You can shave with a knife but it leaves much more 'razor burn'. If you attempt to shave with a knife I would recomened a very sharp knife and lots of lotion and band-aides.


How do you keep a tomato knife sharp?

The best way to keep a knife sharp is to keep it covered after use and to avoid washing it with harsh detergents which can dull the knife blade. I would also recommend obtaining an electric knife sharpener or sharpening stone to use if the knife becomes dull.


In the terms of pressure why has a knife blade got a sharp point?

In physics pressure is defined as P=F/A where P=Pressure F=Force A=Area that is, if F is constant, lower the area (on which force is applied) higher the pressure that area) that's why knife blade got a sharp (low area) point so that it can maximise the pressure on the object that will be cut.