gianeshwar said:If a rod with cross section area A and length L is lying on a smooth table with one end being pulled by f Newtons and other end by 2f Newtons.
What force I can use in calculating Young's Modulus and why?
my doubt is whether it will be 3N or 1.5N and why?
Stretched length is given.
Thanks! I want to know value of force i.e., 1.5f or 3f.berkeman said:It will be accelerated by a = F/m, not sitting still on the table, no?
gianeshwar said:I need to find tensile stress on rod as I want to find elongation for calculating young's modulus
gianeshwar said:Then here in new case answer is F?
billy_joule said:The tensile stress will vary throughout the length of the rod...density & some calculus is needed.
Have you done any elongation or stress of a rotating rod type questions? This are similar.
gianeshwar said:Thanks!Why are you saying "very similar rotating bar". Specifically rotating.
Also I want to know whether my question has a simple answer or the question is not complete or the question is irrelevant...(restated question)
Young's modulus is a measure of the stiffness of a material. It is the ratio of stress to strain in a material under tensile or compressive forces. In simpler terms, it measures how much a material will deform when a force is applied to it.
Young's modulus is calculated by dividing the stress (force per unit area) by the strain (change in length relative to the original length). It is typically measured in units of pascals (Pa) or newtons per square meter (N/m^2).
The factors that affect Young's modulus include the type of material, its structure and composition, and the temperature at which it is tested. Generally, materials with stronger intermolecular forces and a more rigid structure will have a higher Young's modulus.
Young's modulus is an important property because it allows us to compare the stiffness of different materials. It is also a crucial factor in designing and selecting materials for various applications, such as building structures, bridges, and mechanical components.
Young's modulus and a material's elasticity are closely related. A material with a higher Young's modulus will have a higher elasticity, meaning it will be less likely to deform under stress. On the other hand, a material with a lower Young's modulus will have a lower elasticity and will be more prone to deformation.