{"id":2740,"date":"2026-05-18T16:38:18","date_gmt":"2026-05-18T07:38:18","guid":{"rendered":"https:\/\/training.contentsda.kr\/?post_type=courses&p=2740"},"modified":"2026-05-18T07:38:19","modified_gmt":"2026-05-18T07:38:19","slug":"feather-and-coin-experiment","status":"publish","type":"courses","link":"https:\/\/training.contentsda.kr\/ne\/courses\/feather-and-coin-experiment\/","title":{"rendered":"Feather and Coin Experiment"},"content":{"rendered":"

Equipment:\u00a0<\/b>A 6′ long plexiglass tube containing a “coin” and a “feather”. The tube is sealed and can be evacuated.<\/p>\n

What it does:\u00a0<\/b>When the tube is evacuated, the “coin” and “feather” fall at the same rate. When air is introduced into the tube, the “feather” falls at a slower rate.<\/p>\n

Concepts Demonstrated:\u00a0<\/b>The principle that, in the absence of air resistance, all objects at a given location fall with the same constant acceleration.<\/p>","protected":false},"excerpt":{"rendered":"

Equipment:\u00a0A 6′ long plexiglass tube containing a “coin” and a “feather”. The tube is sealed and can be evacuated. What it does:\u00a0When the tube is evacuated, the “coin” and “feather” fall at the same rate. When air is introduced into the tube, the “feather” falls at a slower rate. Concepts Demonstrated:\u00a0The principle that, in the […]<\/p>\n","protected":false},"author":1,"featured_media":3205,"template":"","course-category":[61,60],"course-tag":[],"class_list":["post-2740","courses","type-courses","status-publish","has-post-thumbnail","hentry","course-category-cardboard","course-category-webgl","pmpro-has-access"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/training.contentsda.kr\/ne\/wp-json\/wp\/v2\/courses\/2740","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/training.contentsda.kr\/ne\/wp-json\/wp\/v2\/courses"}],"about":[{"href":"https:\/\/training.contentsda.kr\/ne\/wp-json\/wp\/v2\/types\/courses"}],"author":[{"embeddable":true,"href":"https:\/\/training.contentsda.kr\/ne\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":2,"href":"https:\/\/training.contentsda.kr\/ne\/wp-json\/wp\/v2\/courses\/2740\/revisions"}],"predecessor-version":[{"id":2744,"href":"https:\/\/training.contentsda.kr\/ne\/wp-json\/wp\/v2\/courses\/2740\/revisions\/2744"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/training.contentsda.kr\/ne\/wp-json\/wp\/v2\/media\/3205"}],"wp:attachment":[{"href":"https:\/\/training.contentsda.kr\/ne\/wp-json\/wp\/v2\/media?parent=2740"}],"wp:term":[{"taxonomy":"course-category","embeddable":true,"href":"https:\/\/training.contentsda.kr\/ne\/wp-json\/wp\/v2\/course-category?post=2740"},{"taxonomy":"course-tag","embeddable":true,"href":"https:\/\/training.contentsda.kr\/ne\/wp-json\/wp\/v2\/course-tag?post=2740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}