A 68.4 kg man stands on his toes by exerting an upward force through the Achilles tendon, as shown in the figure. Part (a)  In units of newtons, what is the magnitude of the force through the Achilles tendon if he stands on one foot?  Part (b)  Calculate the force in units of newtons at the pivot of the simplified lever system shown. That force is representative of forces in the ankle joint.

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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.