The block has a weight of 20 lb and is being hoisted at uniform velocity. The system is held in equi appropriate force in each cord. Draw the free-body diagram for the small pulley A. Solution 1. The pulley has negligible size so that it can be modelled as a particle. 2. Imagine the pulley to be separated or detached from the system. 3. The (detached) pulley is subjected to three external forces. They are caused by: i. iii. 4. Draw the free-body diagram of the (detached) pulley showing all these forces labeled with their magnitudes and directions. You should also include any other available information e.g. lengths, angles etc. - which will help when formulating the equilibrium equations for the knot.

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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.