{"id":74,"date":"2024-08-21T14:37:20","date_gmt":"2024-08-21T14:37:20","guid":{"rendered":"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/?post_type=chapter&#038;p=74"},"modified":"2024-09-18T12:45:41","modified_gmt":"2024-09-18T12:45:41","slug":"lesson-5-circular-motion-friction","status":"publish","type":"chapter","link":"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/chapter\/lesson-5-circular-motion-friction\/","title":{"raw":"Lesson 5. Circular Motion. Friction","rendered":"Lesson 5. Circular Motion. Friction"},"content":{"raw":"<img id=\"zef63687346fd\" class=\"in-list alignnone wp-image-191 size-full\" src=\"https:\/\/wp-prd.let.ethz.ch\/WP0-CIPRF91493\/wp-content\/uploads\/sites\/659\/2020\/12\/Newton-Friction.png\" alt=\"\" width=\"2060\" height=\"423\" \/>\r\n\r\n<img id=\"z7c3a539854d5\" class=\"in-list alignnone wp-image-596 size-full\" src=\"https:\/\/wp-prd.let.ethz.ch\/WP0-CIPRF91493\/wp-content\/uploads\/sites\/659\/2020\/12\/Learning-objectives-scaled.jpg\" alt=\"\" width=\"2560\" height=\"251\" \/>\r\n<p style=\"padding-left: 40px\"><span style=\"text-decoration: underline;color: #003366\"><strong>Students should be able to:<\/strong><\/span><\/p>\r\n\r\n<ul>\r\n \t<li><span style=\"color: #003366\">Calculate friction forces and use them for the description of motion phenomena.<\/span><\/li>\r\n \t<li><span style=\"color: #003366\">Discuss the difference between static and dynamic friction.<\/span><\/li>\r\n \t<li><span style=\"color: #003366\">Explain why the air resistivity leads to a maximal velocity in the free fall of objects.<\/span><\/li>\r\n<\/ul>\r\n&nbsp;\r\n\r\n<img id=\"zae7a7542ca87\" class=\"in-list alignnone wp-image-653 size-full\" style=\"font-size: 26px;text-align: center\" src=\"https:\/\/wp-prd.let.ethz.ch\/WP0-CIPRF91493\/wp-content\/uploads\/sites\/659\/2020\/12\/Materials-3-scaled.jpg\" alt=\"\" width=\"2560\" height=\"276\" \/>\r\n<p style=\"text-align: center\"><strong><span class=\"very-loose\"><span id=\"z04752ae02202\" class=\"in-list tight\">Warmup your students! Ask two activating questions\u00a0<\/span><\/span><span class=\"very-loose\"><span class=\"in-list tight\">at the beginning of the lesson<\/span><\/span><\/strong><\/p>\r\n\r\n\r\n<hr \/>\r\n\r\n<img id=\"zd138af73f684\" class=\"in-list alignnone wp-image-594 size-full\" src=\"https:\/\/wp-prd.let.ethz.ch\/engagingphysicstutoringintroductiontonuclearandparticlephysics\/wp-content\/uploads\/sites\/913\/2021\/06\/title-63-small-1-scaled.jpg\" alt=\"\" width=\"2560\" height=\"223\" \/>\r\n\r\n<img id=\"z601209cfd2ae\" class=\"in-list alignnone wp-image-75 size-full\" src=\"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide1-4-scaled.jpg\" alt=\"\" width=\"2560\" height=\"1772\" \/> <img id=\"z777d47327951\" class=\"in-list alignnone wp-image-76 size-full\" src=\"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide2-4-scaled.jpg\" alt=\"\" width=\"2560\" height=\"1772\" \/> <img id=\"za9a3341124d5\" class=\"in-list alignnone wp-image-77 size-full\" src=\"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide3-4-scaled.jpg\" alt=\"\" width=\"2560\" height=\"1772\" \/> <img id=\"zf1f9f74778d0\" class=\"in-list alignnone wp-image-78 size-full\" src=\"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide4-2-scaled.jpg\" alt=\"\" width=\"2560\" height=\"1772\" \/>\r\n\r\n&nbsp;\r\n\r\n<hr \/>\r\n\r\n<img id=\"z710d5552b369\" src=\"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/title-64-small-1-scaled.jpg\" \/>\r\n<pre id=\"za115630cf6ad\" class=\"in-list\" style=\"text-align: center\">Download slides with example of lesson design: <a href=\"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Lektion_5.pdf\">Lektion_5<\/a><\/pre>\r\n&nbsp;","rendered":"<p><img loading=\"lazy\" decoding=\"async\" id=\"zef63687346fd\" class=\"in-list alignnone wp-image-191 size-full\" src=\"https:\/\/wp-prd.let.ethz.ch\/WP0-CIPRF91493\/wp-content\/uploads\/sites\/659\/2020\/12\/Newton-Friction.png\" alt=\"\" width=\"2060\" height=\"423\"><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" id=\"z7c3a539854d5\" class=\"in-list alignnone wp-image-596 size-full\" src=\"https:\/\/wp-prd.let.ethz.ch\/WP0-CIPRF91493\/wp-content\/uploads\/sites\/659\/2020\/12\/Learning-objectives-scaled.jpg\" alt=\"\" width=\"2560\" height=\"251\"><\/p>\n<p style=\"padding-left: 40px\"><span style=\"text-decoration: underline;color: #003366\"><strong>Students should be able to:<\/strong><\/span><\/p>\n<ul>\n<li><span style=\"color: #003366\">Calculate friction forces and use them for the description of motion phenomena.<\/span><\/li>\n<li><span style=\"color: #003366\">Discuss the difference between static and dynamic friction.<\/span><\/li>\n<li><span style=\"color: #003366\">Explain why the air resistivity leads to a maximal velocity in the free fall of objects.<\/span><\/li>\n<\/ul>\n<p>\u00a0<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" id=\"zae7a7542ca87\" class=\"in-list alignnone wp-image-653 size-full\" style=\"font-size: 26px;text-align: center\" src=\"https:\/\/wp-prd.let.ethz.ch\/WP0-CIPRF91493\/wp-content\/uploads\/sites\/659\/2020\/12\/Materials-3-scaled.jpg\" alt=\"\" width=\"2560\" height=\"276\"><\/p>\n<p style=\"text-align: center\"><strong><span class=\"very-loose\"><span id=\"z04752ae02202\" class=\"in-list tight\">Warmup your students! Ask two activating questions\u00a0<\/span><\/span><span class=\"very-loose\"><span class=\"in-list tight\">at the beginning of the lesson<\/span><\/span><\/strong><\/p>\n<hr>\n<p><img loading=\"lazy\" decoding=\"async\" id=\"zd138af73f684\" class=\"in-list alignnone wp-image-594 size-full\" src=\"https:\/\/wp-prd.let.ethz.ch\/engagingphysicstutoringintroductiontonuclearandparticlephysics\/wp-content\/uploads\/sites\/913\/2021\/06\/title-63-small-1-scaled.jpg\" alt=\"\" width=\"2560\" height=\"223\"><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" id=\"z601209cfd2ae\" class=\"in-list alignnone wp-image-75 size-full\" src=\"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide1-4-scaled.jpg\" alt=\"\" width=\"2560\" height=\"1772\" srcset=\"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide1-4-scaled.jpg 2560w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide1-4-300x208.jpg 300w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide1-4-1024x709.jpg 1024w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide1-4-768x532.jpg 768w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide1-4-1536x1063.jpg 1536w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide1-4-2048x1418.jpg 2048w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide1-4-65x45.jpg 65w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide1-4-225x156.jpg 225w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide1-4-350x242.jpg 350w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\"> <img loading=\"lazy\" decoding=\"async\" id=\"z777d47327951\" class=\"in-list alignnone wp-image-76 size-full\" src=\"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide2-4-scaled.jpg\" alt=\"\" width=\"2560\" height=\"1772\" srcset=\"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide2-4-scaled.jpg 2560w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide2-4-300x208.jpg 300w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide2-4-1024x709.jpg 1024w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide2-4-768x532.jpg 768w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide2-4-1536x1063.jpg 1536w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide2-4-2048x1418.jpg 2048w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide2-4-65x45.jpg 65w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide2-4-225x156.jpg 225w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide2-4-350x242.jpg 350w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\"> <img loading=\"lazy\" decoding=\"async\" id=\"za9a3341124d5\" class=\"in-list alignnone wp-image-77 size-full\" src=\"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide3-4-scaled.jpg\" alt=\"\" width=\"2560\" height=\"1772\" srcset=\"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide3-4-scaled.jpg 2560w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide3-4-300x208.jpg 300w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide3-4-1024x709.jpg 1024w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide3-4-768x532.jpg 768w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide3-4-1536x1063.jpg 1536w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide3-4-2048x1418.jpg 2048w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide3-4-65x45.jpg 65w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide3-4-225x156.jpg 225w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide3-4-350x242.jpg 350w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\"> <img loading=\"lazy\" decoding=\"async\" id=\"zf1f9f74778d0\" class=\"in-list alignnone wp-image-78 size-full\" src=\"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide4-2-scaled.jpg\" alt=\"\" width=\"2560\" height=\"1772\" srcset=\"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide4-2-scaled.jpg 2560w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide4-2-300x208.jpg 300w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide4-2-1024x709.jpg 1024w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide4-2-768x532.jpg 768w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide4-2-1536x1063.jpg 1536w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide4-2-2048x1418.jpg 2048w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide4-2-65x45.jpg 65w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide4-2-225x156.jpg 225w, https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Slide4-2-350x242.jpg 350w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\"><\/p>\n<p>\u00a0<\/p>\n<hr>\n<p><img decoding=\"async\" id=\"z710d5552b369\" src=\"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/title-64-small-1-scaled.jpg\" alt=\"image\"><\/p>\n<pre id=\"za115630cf6ad\" class=\"in-list\" style=\"text-align: center\">Download slides with example of lesson design: <a href=\"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-content\/uploads\/sites\/2103\/2024\/08\/Lektion_5.pdf\">Lektion_5<\/a><\/pre>\n<p>\u00a0<\/p>\n","protected":false},"author":3500,"menu_order":5,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[49],"contributor":[],"license":[],"class_list":["post-74","chapter","type-chapter","status-publish","hentry","chapter-type-numberless"],"part":3,"_links":{"self":[{"href":"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-json\/pressbooks\/v2\/chapters\/74","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-json\/wp\/v2\/users\/3500"}],"version-history":[{"count":7,"href":"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-json\/pressbooks\/v2\/chapters\/74\/revisions"}],"predecessor-version":[{"id":156,"href":"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-json\/pressbooks\/v2\/chapters\/74\/revisions\/156"}],"part":[{"href":"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-json\/pressbooks\/v2\/parts\/3"}],"metadata":[{"href":"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-json\/pressbooks\/v2\/chapters\/74\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-json\/wp\/v2\/media?parent=74"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-json\/pressbooks\/v2\/chapter-type?post=74"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-json\/wp\/v2\/contributor?post=74"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/wp-prd.let.ethz.ch\/physcs1phys\/wp-json\/wp\/v2\/license?post=74"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}