div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=an-introductory-course-of-mechanicshtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: An Introductory Course of Mechanics loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentsmxreader031viewer2022020405575067d01a28ab0f07ad45f1html5thumbnails1jpg width=140 height=200 divp© 1934 Nature Publishing Grouppdiv