{"id":2650,"date":"2026-05-18T16:47:11","date_gmt":"2026-05-18T07:47:11","guid":{"rendered":"https:\/\/training.contentsda.kr\/?post_type=courses&#038;p=2650"},"modified":"2026-05-18T07:47:12","modified_gmt":"2026-05-18T07:47:12","slug":"force-motion-and-friction","status":"publish","type":"courses","link":"https:\/\/training.contentsda.kr\/ko\/courses\/force-motion-and-friction\/","title":{"rendered":"Force, Motion, and Friction"},"content":{"rendered":"<p><strong>Objective:<\/strong> The goal of this experiment is to investigate the effects of different surfaces on the force required to move an object. Students will explore the concepts of slope, smoothness, and friction using sandpaper, a glass plate, drawing paper, and an overhead projector (OHP) sheet.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Procedure:<\/strong><\/p>\n<ol>\n<li><strong>Setup (5 minutes):<\/strong>\n<ul>\n<li>Place the table or flat surface in a well-lit area.<\/li>\n<li>Ensure the wooden block or small box is clean and has a flat base.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Baseline Measurement (10 minutes):<\/strong>\n<ul>\n<li>Place the wooden block on the table.<\/li>\n<li>Attach the spring scale to the block horizontally.<\/li>\n<li>Gently pull the block along the table, using the spring scale to measure the force required.<\/li>\n<li>Record the force needed to move the block on a smooth table.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Sandpaper Surface (10 minutes):<\/strong>\n<ul>\n<li>Attach a piece of rough sandpaper to the table.<\/li>\n<li>Repeat the pulling motion with the block and record the force.<\/li>\n<li>Replace the rough sandpaper with a smoother grade and repeat the experiment.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Glass Plate (10 minutes):<\/strong>\n<ul>\n<li>Place a glass plate on the table.<\/li>\n<li>Repeat the pulling motion with the block and record the force.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Drawing Paper (10 minutes):<\/strong>\n<ul>\n<li>Place a sheet of drawing paper on the table.<\/li>\n<li>Repeat the pulling motion with the block and record the force.<\/li>\n<\/ul>\n<\/li>\n<li><strong>OHP Sheet (10 minutes):<\/strong>\n<ul>\n<li>Place an OHP sheet on the table.<\/li>\n<li>Repeat the pulling motion with the block and record the force.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Analysis and Discussion (15 minutes):<\/strong>\n<ul>\n<li>Compare the forces required to move the block on different surfaces.<\/li>\n<li>Discuss the concepts of slope, smoothness, and friction.<\/li>\n<li>Relate the experiment to real-world scenarios, emphasizing the impact of friction on everyday activities.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><strong>Conclusion:<\/strong> This experiment provides a hands-on exploration of force and motion, allowing students to observe and measure the effects of different surfaces on friction. The comparison of forces required on sandpaper, glass, drawing paper, and an OHP sheet enhances understanding of the relationship between surface characteristics and the ease of movement.<\/p>","protected":false},"excerpt":{"rendered":"<p>Objective: The goal of this experiment is to investigate the effects of different surfaces on the force required to move an object. Students will explore the concepts of slope, smoothness, and friction using sandpaper, a glass plate, drawing paper, and an overhead projector (OHP) sheet. &nbsp; Procedure: Setup (5 minutes): Place the table or flat [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3216,"template":"","course-category":[61,60],"course-tag":[],"class_list":["post-2650","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\/ko\/wp-json\/wp\/v2\/courses\/2650","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/courses"}],"about":[{"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/types\/courses"}],"author":[{"embeddable":true,"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":1,"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/courses\/2650\/revisions"}],"predecessor-version":[{"id":2652,"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/courses\/2650\/revisions\/2652"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/media\/3216"}],"wp:attachment":[{"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/media?parent=2650"}],"wp:term":[{"taxonomy":"course-category","embeddable":true,"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/course-category?post=2650"},{"taxonomy":"course-tag","embeddable":true,"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/course-tag?post=2650"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}