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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Mar 3, 2008

Problem 3/228

Is the answer given in the handout wrong? I keep getting -27.48 for my Angular Momentum but it should just be the cross product between the radius and the linear momentum. Am I missing something?
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2 comments:

Kyle said...

Both r and mv are in the i and j directions. Your mv is the vector from part a, and r is simply 2cos(15)i - 2sin(15)j. If you do the cross product right, you get what's on the answer sheet. Double check your negative signs and vectors.

March 4, 2008 at 1:11 PM
David Rojas said...

so yea i realized that i was using 30 degrees for some odd reason...that'll do that to ya. Thanks for the response though.

March 4, 2008 at 11:02 PM

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