Trabajo (Work) (Libros de física para madrugadores (Early Bird Physics)) (Spanish Edition)

What is work? You may think work is doing chores or going to a job, but you do work every time you move something from one place to another. With experiments that demonstrate these fundamental concepts, discover how you work, and how simple machines make doing work easier. Focusing on the six simple machines--levers, wheels and axles, pulleys, screws, inclined planes, and wedges--this title introduces the scientific concept of work