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Practice Exam 2 Mece 2301 2

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19 views5 pages

Practice Exam 2 Mece 2301 2

Uploaded by

Pao Morales
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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MECE 2301.

02
Summer I 2019
June 28, 2019
Exam 2

KEY
Name________________________________________________________

PLEASE READ: No programable calculators, no bathroom breaks, no smart watches, no


cell phones. Closed book and closed notes. Only a scientific calculator is allowed.
FBD in problems 1 and 3 are 5 points each
did it in excel to verify: Again, same answer.

FR = {275 i – 2016.3 j} N ( MR)A = -6642 N·m(15 pts)


2. Locate the centroid ( x , y ) of the composite figure shown below relative to the
origin. (note: a grid has been provided to show you dimensions of all sides. It is a 1’x1’ grid) HINT:

I also did it in excel 2 other ways to verify my answer. Check this out. Same answer!!!<==

x = _____0.742 ft._____ (15 pts) y = ______0.652__ (15 pts)


Again verified in excel. same results.

MA = {-37.66i + 71.19j + 38.82j} N·m (15 pts) MCB = 79.55 N·m(15 pts)
Chapter 5 question (not included in the original exam as we were a bit behind)

4. Find the tension in the wires BC and BD. Consider rod BA massless, but the sign has a weight of
150 lbs. (40 pts)

Show all your work for full credit. An extra sheet has been provided if needed but show your answers at the bottom
of this page.

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