{"id":23557,"date":"2026-03-02T08:01:23","date_gmt":"2026-03-02T13:01:23","guid":{"rendered":"https:\/\/www.purdue.edu\/freeform\/me274\/?p=23557"},"modified":"2026-03-05T05:57:12","modified_gmt":"2026-03-05T10:57:12","slug":"homework-h4-i-sp26","status":"publish","type":"post","link":"https:\/\/www.purdue.edu\/freeform\/me274\/2026\/03\/02\/homework-h4-i-sp26\/","title":{"rendered":"Homework H4.I – Sp2688"},"content":{"rendered":"\n\n\n
Problem statement<\/strong><\/em><\/span><\/a>
\nSolution video<\/strong><\/em><\/span><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

DISCUSSION THREAD<\/span><\/strong><\/em><\/p>\n

NOTE<\/strong><\/em><\/span>: Consider all surfaces to be smooth. Leave g as part of your answer<\/strong>.<\/p>\n

\"\"<\/div>\n

Discussion and hints:<\/strong><\/em><\/p>\n

Let’s first take a look at the motion of the mechanism, as shown in the simulation results below.<\/p>\n

<\/p>\n

Recall the following f<\/em>our-step plan<\/em><\/span> outline in the lecture book and discussed in lecture:<\/p>\n

Step 1: FBD<\/strong><\/em>
\nDraw a\u00a0free body diagram for the entire system of A+B+bar. Which, if any, forces do non-conservative work on this system? Can you justify this from the FBD?<\/p>\n

Step 2: Kinetics (work\/energy equation)<\/strong><\/em>
\nWrite down the work energy equation for the system of A+B+bar. The KE will be the sum of the KEs of A and B. The PE will be the sum of the PEs for A and B.<\/p>\n

Step 3: Kinematics<\/strong><\/em>
\nShown below is a freeze frame of the system at position 2. Where do you see the IC for AB to be located? Use the location of the instant center of AB at Position 2 to simplify your kinematics for that position.<\/p>\n

<\/p>\n

Step 4: Solve<\/strong><\/em>
\nSolve your work\/energy equation for the speed of block A.<\/p>\n

\n

Any questions??<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Problem statement Solution video DISCUSSION THREAD NOTE: Consider all surfaces to be smooth. Leave g as part of your answer.<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-23557","post","type-post","status-publish","format-standard","hentry","category-chapter-4-homework"],"_links":{"self":[{"href":"https:\/\/www.purdue.edu\/freeform\/me274\/wp-json\/wp\/v2\/posts\/23557","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.purdue.edu\/freeform\/me274\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.purdue.edu\/freeform\/me274\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.purdue.edu\/freeform\/me274\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/www.purdue.edu\/freeform\/me274\/wp-json\/wp\/v2\/comments?post=23557"}],"version-history":[{"count":4,"href":"https:\/\/www.purdue.edu\/freeform\/me274\/wp-json\/wp\/v2\/posts\/23557\/revisions"}],"predecessor-version":[{"id":24234,"href":"https:\/\/www.purdue.edu\/freeform\/me274\/wp-json\/wp\/v2\/posts\/23557\/revisions\/24234"}],"wp:attachment":[{"href":"https:\/\/www.purdue.edu\/freeform\/me274\/wp-json\/wp\/v2\/media?parent=23557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.purdue.edu\/freeform\/me274\/wp-json\/wp\/v2\/categories?post=23557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.purdue.edu\/freeform\/me274\/wp-json\/wp\/v2\/tags?post=23557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}