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  • Yeasin Arafath
    Yeasin Arafath commented on Fatima Ahmed's classified listing.
    Adam's Brunoise Dice - $5 Physics Quiz
    • June 22, 2021
    • Sourav Chowhan likes this.
    • Yeasin Arafath
      Mesbah Abir To understand this, at first we have to know about pressure. In the light of physics, pressure is the amount of force applied per unit area. That is P=F/A. Now in case of cutting something using a knife, you have to put pressure on the thing you want to...  more
      • June 21, 2021
    • Yeasin Arafath
      Tawhid Mim A dull or blunt knife is a lazy tool. It doesn’t want to work so it makes you work harder. That means using more pressure or a harder chopping motion.
      If you’re using a knife to peel a potato or carrot, the dull knife can stop on an irregular...  more
    • Yeasin Arafath
      Khokon Roy The main reason it's safer is that a sharp knife will do what you intend to do - it will cut things - it will cut cleanly and decisively - so as long as you're not doing anything stupid (like cutting toward your fingers), the knife will perform the...  more
      • June 21, 2021
    • Yeasin Arafath
      Imad Mustafiz The main question that arises is that a sharper knife has more penetrating power and can easily cut through someone's skin in case of a slip causing an incised wound. But a blunt knife will create laceration which will create irregular edges in the wound...  more
      • June 21, 2021
    • Yeasin Arafath
      Taarik Hasan In equation form Pressure = Force/Area. Here the Pressure is determined by equal Proportionate of Applied force, and Area is disproportionate. If the area of applied force is less/thin/small, the pressure will increase on same applied force.


      If the...  more
      • June 21, 2021
    • Yeasin Arafath
      Taarik Hasan (..)
      Thinner/sharper area puts more pressure on surface that helps to use less energy as pressure for a person to cut the carrots smoothly. Dull knives
      need to use more force and it is kind of slippery cause it doesn’t cut smoothly.
      Possibility of...  more
      • June 21, 2021
    • Yeasin Arafath
      Nanjiba Naowar Imagine two knives, Sharp and Blunt. Sharp must have a thin edge and the Blunt has a thick edge. So the edge area of blunt is bigger than sharp. When you put the same force on both of them, the force is distributed in the smaller portion of Sharp's edge...  more
      • June 21, 2021
    • Yeasin Arafath
      Sourav Chowhan So the phenomenon is related to the Pressure of physics.
      We know pressure very well right? Pressure is a physics phenomenon like if you Push some object, you're are actually employing pressure theory. To cut something you need to give some push/Force to...  more
      • June 21, 2021
    • Yeasin Arafath
      Sourav Chowhan propositional in that equation means if the value of the area is too low then the pressure will be too high and propositional means if the value of "F" is high then "P" will be high too.
      Brunoise cut is a special type of cutting food...  more
      • June 21, 2021
    • Yeasin Arafath
      Sourav Chowhan He used the blunt knife and the result is he almost cut his fingers because he needs to give more force to cut, remember that equation of pressure??? to cut with a blunt knife he needs to give more Force. But if he had used the sharp knife where the edge...  more
      • June 21, 2021
    • Yeasin Arafath
      Sourav Chowhan With a sharp knife, he doesn't have to give much pressure on cutting, so that's why it will be safer.
      That's why it is safe to use a sharp knife than a dull knife. It will save you both time and energy.

      So next time you cut a tomato please use a sharp knife.
      • June 21, 2021
    • Yeasin Arafath
      Afnan Alam From Pascal's Law, we derive the equation of pressure as follows-
      P=F/A
      where, P= applied pressure on the object
      F= force applied on the...  more
      • June 21, 2021
    • Yeasin Arafath
      Abrar Ibne Amin Jim The incident refers to pascal's law: P= F/A. Here P= Pressure, F= Force and A= Surface Area(The surface area of the object on which force has been applied). The P and A are inversely proportional to each other.

      Adam tried to cut the carrots using a...  more
      • June 21, 2021
    • Yeasin Arafath
      Yeasin Arafath In this case, Adam is trying to cut the Carrot. So he has to apply force in the knife which makes the pressure cut the Carrots. Here another physics term arises that is cutting Area of the knife. With all of these things, we can get a relation from...  more
      • June 22, 2021
    • Yeasin Arafath
      Tanveer Tausif Ratul The above phenomena is related to “PRESSURE”.What is pressure?Pressure is defined as-“FORCE PER UNIT AREA”.Let,we apply a certain amount of force ‘F’ by a knife which has an area ‘A’,by which it will apply the load on another object,a...  more
    • Yeasin Arafath
      Tanveer Tausif Ratul larger.Because of that,the vegetables can be cut very easily & safely.But while using blunt knife which has large edge area,amount of pressure will decrease for the same 10N force.As a result,he will have 2 options.One is,reducing the edge area of...  more
      • June 23, 2021
    • Yeasin Arafath
      Md Mahedi Hasan A dull knife is actually more dangerous to use than one a sharp knife. Cause a dull knife requires more pressure to cut. It’s increasing the chance of the knife can slip with great force behind it. Sharp knife bites surface much
      readily.

      For example,...  more
      • June 23, 2021
    • Yeasin Arafath
      Khadeeza Afruz Shammee Pascal's principle of pressure describes this knife phenomenon. As a scalar physical quantity ,pressure is defined as the force per unit area applied perpendicular to the surface which it is applied .
      The elementary mathematical expression for pressure...  more
      • June 25, 2021
    • Yeasin Arafath
      Aria Hossain In physics force=pressure/area. In order to cut food, you have to exert force. According to the equation, force is directly proportional to pressure. A blunt knife has more area around the cutting edge than a sharp knife. So a blunt knife requires more...  more
      • June 26, 2021
    • Yeasin Arafath
      Abdullah Julaybib Firstly, you’ll need more pressure to use a blunt knife.
      P=F/A, for a fixed area, force is directly proportional to pressure. If the
      area of a blunt and a sharp knife is same, then doubling the pressure on blunt
      knife means doubling the force....  more
      • June 26, 2021
    • Yeasin Arafath
      Abhay Sunny Pressure= force/area, area of sharp knife is less than area of blunt knife, p is proportional to 1/area, so pressure of sharp knife is more than blunt knife.Don't get confused with the wight and pressuring, pressure is the force on a unit area that is...  more
      • June 27, 2021
    • Yeasin Arafath
      Abdullah Masud This is simply an example of pressure in our daily lives. Here, according to Pascal's law (P = f/a, where pressure is the force applied over a certain area), the sharp knife can exert greater pressure than the blunt knife, as the sharper knife has less...  more
      • June 27, 2021