the level of nuclear physics, not the level of particle physics where the real strong force lives) one can talk about a Yukawa potential of the form $$ V(r) = - \frac{g^2}{4 \pi c^2} \frac{e^{-mr}}{r} $$ F is a compressive force. Its formula … Some sites have the same basic formula but with different units after B= Some use μ0, μr, or μ. This tension calculator will help you determine the tension forces acting in a rope, string, or any tension members that undergo pulling or stretching forces. The gravitational field strength at a point is defined as ” Gravitational force per unit mass at that point.”At any place, its value is equal to the value of g at that point.Near the surface of the earth,the gravitational field strength is 10 N kg-1. Strength of materials, also called mechanics of materials, is a subject which deals with the behavior of solid objects subject to stresses and strains .. It is the measure of average amount of force exerted per unit area over a material. A is the unit area of a solid body. This article provides a comprehensive physics formulas list, that will act as a ready reference, when you are solving physics problems. This can also be used as the compressive strength formula as it is the limit at which the solid material deforms. Trying to determine the strength of an electromagnet in Teslas, with an iron core. Which one to use? What is Gravitational field strength? You can even use this list, for a quick revision before an exam. (Here I am using Newton’s formula for gravity, but as long as α gravity is small compared to 1, Einstein’s formula for gravity between two objects is essentially identical.) Stress is a physical quantity. 9. SI unit of pole strength is A . The term is closely associated with 'internal force'. According to the pole strength formula, the pole strength of a magnet is given by the ratio of magnetic moment to its effective length (called the magnetic length). 7. Strength / Mechanics of Material Menu. m. Force and Potential Energy. Units and Dimensions The magnetic fields generated by electric currents are characterized by the magnetic flux density , measured in .But when the generated fields pass through magnetic materials which themselves contribute internal magnetic fields, ambiguities can arise concerning what part of the field comes from the external currents, and what part comes from the material itself. (a) 1. The well-known American author, Bill Bryson, once said: “Physics is really nothing more than a search for ultimate simplicity, but so far all we have is a kind of elegant messiness.” Physics is indeed the most fundamental of the sciences that tries to describe the whole … Learning physics is all about applying concepts to solve problems. In materials science, the strength of a material is its ability to withstand an applied load without failure. (a) 0.477 T (b) This field strength is small enough that it can be obtained using either a permanent magnet or an electromagnet. 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