Welcome to the website of ME 274 for the Fall 2008 semester. On this site you can view blog posts, add your own blog posts and add comments to existing posts. In addition to the blog are links to course material: course information, information on solution videos, exams, quizzes, homeworks and other course-related material. Direct links to the homework solution videos are also available on the left side of this page.


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Jul 22, 2008

Problem 6/188


This problem is a little tricky in that you need to make sure that you keep all of the details straight.
  • Recall that the angular momentum equation integral (sum M_A) dt = H_A2 - H_A1 applies for either A being the CM of the SYSTEM or a fixed point. My recommendation is to first find the CM of the system made up of the particle P and the bar.
  • Call this CM of the system point G. Therefore, H_G_bar = I_G*omega, and H_G_particle = m*r_P/G x v_P with H_G = H_G _bar + H_G_particle. Since angular momentum is conserved, H_G2 = H_G1.
  • Also, use conservation of linear momentum of the system of the bar and P.
Let us know if you have questions on this.
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