مدونة

Quick Answer A compound machine combines two or more simple machines, such as levers, pulleys, wheels and axles, wedges, screws, or inclined planes, to perform work more efficiently. According to Simple Machines and Their Applications by the National Science Teachers Association (NSTA), and the engineering principles outlined in Engineering Mechanics, compound machines reduce human effort …

تعريف الآلة المركبة، وعملها، وأمثلة عليها اقرأ أكثر "