1107科豆手推車1720 1840-

div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=document11071720-1840-htmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: 1107科豆手推車1720 1840- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader035fdocumentpubreader035viewer202206230855903b971a28ab180d8b47d2html5thumbnails1jpg width=140 height=200 divpLeverspdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=document11071720-1840-htmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: 1107科豆手推車1720 1840- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader035fdocumentpubreader035viewer202206230855903b971a28ab180d8b47d2html5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=document11071720-1840-htmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: 1107科豆手推車1720 1840- loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader035fdocumentpubreader035viewer202206230855903b971a28ab180d8b47d2html5thumbnails3jpg width=140 height=200 divpClasses of leversp p• Class 2: Resistance in the middle: the effort is applied on one side of the resistance and the fulcrum is located on the other side for example a wheelbarrow or a nutcracker or a bottle openerp div class=annotationa href=http:enwikipediaorgwikiWheelbarrow rel=ugc nofollow target=_blankhttp:enwikipediaorgwikiWheelbarrowadiv div class=annotationa href=http:enwikipediaorgwikiNutcracker rel=ugc nofollow target=_blankhttp:enwikipediaorgwikiNutcrackeradiv div class=annotationa href=http:enwikipediaorgwikiBottle_opener rel=ugc nofollow...

1107科豆手推車1720 1840-

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