A bicycle and rider travelling at 15 km/hr on a level road, have a mass of 100 kg. The brake is applied to the rear wheel which is 800 mm in diameter. The pressure applied on the brake is 90 N and the coefficient of friction is 0.15. Find the distance covered by the bicycle and the number of turns of its wheel before coming to rest.

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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.