Exercise 1 - (taken from a midterm) Two boxes of masses m and m2 are stacked as shown.b is the coefficient of viscous friction between all surfaces of contact and 1(t) and x2(t) denote the displacement of each box. x1(t) m1 x2(t) m2 b. 1A - If a displacement 2 is applied to mass m2, find the transfer function between the displacement of mass m2 and the resulting displacement of mass m, that is H(s) = X1(s)/X2(s). 1B - Prove that if mass m2 is moved by 1 mm, mass m moves by the same amount in the same direction.