div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=simple-machine-researchhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Simple Machine Research loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader038vdocumentsusreader038viewer20221101195558f7cbd8b42a724c8b4937html5thumbnails1jpg width=140 height=200 divpSimple Machines Researchp div class=annotationa href=http:wwwgrcnasagovWWWK-12Summer_TrainingKaeAvenueESResource_Charthtml rel=ugc nofollow target=_blankhttp:wwwgrcnasagovWWWK-12Summer_TrainingKaeAvenueESResource_Charthtmladiv div class=annotationa href=http:librarythinkquestorgJ002079Fplanehtm rel=ugc nofollow target=_blankhttp:librarythinkquestorgJ002079Fplanehtmadiv div class=annotationa href=http:librarythinkquestorgJ002079Fwheelhtm rel=ugc nofollow target=_blankhttp:librarythinkquestorgJ002079Fwheelhtmadiv div class=annotationa href=http:librarythinkquestorgJ002079Fscrewhtm rel=ugc nofollow target=_blankhttp:librarythinkquestorgJ002079Fscrewhtmadiv div class=annotationa href=http:librarythinkquestorgJ002079Fleverhtm rel=ugc nofollow target=_blankhttp:librarythinkquestorgJ002079Fleverhtmadiv div class=annotationa href=http:librarythinkquestorgJ002079Fpulleyhtm rel=ugc nofollow target=_blankhttp:librarythinkquestorgJ002079Fpulleyhtmadiv div class=annotationa href=http:librarythinkquestorgJ002079Fwedgehtm rel=ugc nofollow target=_blankhttp:librarythinkquestorgJ002079Fwedgehtmadiv div class=annotationa href=http:wwwbbccoukschoolsks2bitesizesciencephysical_processesforces_actionread1shtml rel=ugc nofollow target=_blankhttp:wwwbbccoukschoolsks2bitesizesciencephysical_processesforces_actionread1shtmladiv div class=annotationa href=http:wwwbbccoukschoolsks2bitesizesciencephysical_processesfrictionread1shtml rel=ugc nofollow target=_blankhttp:wwwbbccoukschoolsks2bitesizesciencephysical_processesfrictionread1shtmladiv div class=annotationa href=http:wwwcosiorgfilesFlashsimpMachsm1swf rel=ugc nofollow target=_blankhttp:wwwcosiorgfilesFlashsimpMachsm1swfadivdiv