Block A has a mass mA and is attached to a spring having a stiffness k and unstretched length l0. If another  block B, having a mass mB, is pressed against A so that the spring deforms a distance d, show that for  separation to occur it is necessary that d > 2µkg(mA + mB )/k, where µkis the coefficient of kinetic friction  between the blocks and the ground. Also, what is the distance the blocks slide on the surface before they  separate?

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Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.