2. A coupled mass-spring system is shown below. The masses are m, = 25 kg and m = 45 kg. The spring constants are k, = 5000a N/m and kz = 3000b N/m. (a) Obtain the equations of motion for this system. (b) Obtain the transfer functions X:(s)/F(s) and Xa(s)/F(s).

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Engineering Drawing

Technical drawing has been around since ancient times. As in the ancient Renaissance, complicated drawings were created, including Leonardo da Vinci's drawing. Modern engineering drawing, including its specific orthographic projection with scale conventions, began in Europe (France) during the early stages of Industrialization. L.T. C. Rolt also made some of Marc's drawings for its block-making machinery (in 1799) that also may have contributed significantly to British engineering technology. Since he learned the art of presenting three-dimensional(3D) items in a two-dimensional(2D) plane, as we now term mechanical drawing.