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Exercise 5.3.9. An undamped spring-mass-damper system with mass kg and spring constant newtons per meter is at equilibrium position and is not moving at time . No additional forces act on the mass until time seconds, but for a force newtons is applied to the mass. At time seconds the force drops to zero. Find the position of the mass for by formulating an appropriate ODE with initial conditions and solving with the Laplace transform. Plot the solution on the interval .