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###### State the reason why you assume Stresses are within the elastic limit for deriving flexural formula _= [5]

State the reason why you assume Stresses are within the elastic limit for deriving flexural formula _= [5]

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##### Consider damped mass-spring system governed by the following ordinary differential equationy + Ty + 12y = r(t)where y y(t) is the displacement of the mass from an equilibrium position,r(t) is an external driving force and the dots indicate derivatives with respect to time Suppose that the initial displacement and velocity of the mass are y(0) = 0 and y(0) = 2 respectively and the driving force is given byr(t) = (1 - Hlt - T)Jet + 2l0s(t = 10)_Find the Laplace transform R(s) of the driving force

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