System modeling and analysis is a standard activity in every engineering discipline. This text offers a broad-based introduction to systems engineering that incorporates material from mechanical, electrical, aerospace, and chemical engineering. The overall theme that distinguishes it from other texts is its unified treatment of disparate physical systems, emphasizing similarities in both the modeling and behavior of lumped-element systems. Every chapter includes a wide variety of examples, as well as exercise problems, drawn from real-world mechanical, electrical, hydraulic, chemical, and thermal systems. Aimed at second- and third-year undergraduates, this introductory text offers a unified entry into the multidisciplinary world of engineering. Solutions manual available.