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https:\/\/royalsocietypublishing.org\/doi\/10.1098\/rspa.2016.0770<\/a> ","protected":false},"excerpt":{"rendered":"","protected":false},"author":17897162,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_geoff_meta_description_en":"Shoelace failure combines repeated foot-strike impacts that loosen the knot with inertial forces on the free ends, producing a sudden runaway untying.","_geoff_meta_description_zh":"\u978b\u5e26\u7ed3\u7684\u677e\u8131\u4e0d\u662f\u4e00\u6b21\u62c9\u626f\u9020\u6210\uff0c\u800c\u662f\u811a\u843d\u5730\u7684\u51b2\u51fb\u9010\u6b65\u677e\u52a8\u7ed3\u4f53\uff0c\u6446\u817f\u4ea7\u751f\u7684\u60ef\u6027\u518d\u62c9\u957f\u81ea\u7531\u7aef\uff0c\u6700\u7ec8\u89e6\u53d1\u5feb\u901f\u5931\u7a33\u3002","_wpcom_ai_launchpad_first_post":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[787297218],"tags":[787300193,787300195,787300192,787300190,787300194,787300191],"class_list":["post-19903","post","type-post","status-publish","format-standard","hentry","category-daily-maths-physics-chemistry","tag-knots-zh","tag-shoelaces-zh","tag-knots","tag-mechanics","tag-shoelaces","tag-mechanics-zh",""],"translatepress_titles":{"en_AU":"Why Can Shoelaces Suddenly Come Undone While You Walk?","zh_CN":"\u8d70\u7740\u8d70\u7740\uff0c\u978b\u5e26\u4e3a\u4ec0\u4e48\u4f1a\u7a81\u7136\u6563\u5f00\uff1f"},"jetpack_publicize_connections":[],"jetpack_likes_enabled":false,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p1ar9H-5b1","jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/posts\/19903","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/users\/17897162"}],"replies":[{"embeddable":true,"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/comments?post=19903"}],"version-history":[{"count":0,"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/posts\/19903\/revisions"}],"wp:attachment":[{"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/media?parent=19903"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/categories?post=19903"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/geoffreychen.com\/zh\/wp-json\/wp\/v2\/tags?post=19903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
https:\/\/vcresearch.berkeley.edu\/news\/science-shows-why-shoelaces-come-untied<\/a><\/p>\n