How can I find out the Young's modulus of a material?

Right, so the Young's modulus of a material is a measure of it's rigidity. The higher the value of the Young's modulus, the more rigid the material is.Ok, so the Young's modulus, E, is equal to the stress that the material experiences divided by the strain experienced by the material.The stress, σ, of a material is equal to the force, F, applied to this material, divided by the area, A, upon which this force is applied. The equation for this is:σ = F/AOn the other hand, the strain, ε, of the material is equal to the extension of the material, e (how much the material has extended by having this force applied to it), divided by the original length, l, of the material. The equation for strain isε = e/lThe Young's modulus is equal to the stress divided by the strain, so:E= σ/ε = (F/A)/(e/l) = (FL)/(Ae)So, E = (Fl)/(Ae)For example, If a metal wire of original length 2cm

WS

Related Physics A Level answers

All answers ▸

A uniform plank of wood of mass 32 kg and length 4.0 m is used to cross a ditch. In the ditch is a rock, which is used to support the plank horizontally 0.80 m from one end. The other end is supported by the bank. Calculate the rock's supporting force.


How do I derive Kepler's 3rd law using Newton's Law of gravitation, in the case of a circular orbit?


How would I derive Kepler's third law from Newton's law of gravitation and the equations of circular motion?


A conical pendulum is a mass suspended from a point that traces out a horizontal circle. By balancing the weight with the tension in the string, determine the speed of the bob.