Question

3. A bandage is made up of two identical patches of equal mass M, linked by a vis- coelastic material, which we model with springs and dashpots. The bandage is fixed on the two ends. f(t) is the forced applied to the first mass, k is the spring constant and b is the damping coefficient. f(t) a) Draw the free-body diagram for both masses. (b) Describe the system by a set of ordinary differential equations. (c) Find the transfer function Gi(s)- (d) Find the transfer function G2(s) X(6) (e) Describe in a sentence what will happen to each mass if f(t)(t), a unit impulse is applied to the left mass. (f) Considering f(t) = δ(t), plot X1 and X2 as a function of time using MATLAB Assume all initial conditions to be zero and that M = k-1.

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