Name:
CSUID:
Homework Self-Reflection
Subject: CIVE 260 Statics
Assignment:
HW22
Individual Problem Reflection
Problem Name/#:
Topics covered:
HW22_#1 MOI_A
How are area
moments of inertia
similar AND different
from centroids?
Problem Name/#:
Topics covered:
10-67
Write out WHY you
knew that each step
was the correct one to
solve this problem.
Problem Name/#:
Topics covered:
HW22_#3 MOI Happy
What did you learn on
this problem?
How would you grade your effort to learn on this assignment? (fill box)
0
1
2
3
4pts
How would you grade your effort on this self-reflection?
0
1
2
3
4pts
HW22_#1 MOI_A
(former exam question) A uniform density 2D plate is shown below. Find the area moment of
inertia about the Y axes (Iy).
Ans: Iy=436.225 m4
#
1
2
3
Ans: 𝐼𝑥𝑦 = 0.74 𝑖𝑛^4
HW22_#3 MOI HAPPY
You are designing a custom steel plate for McDonalds headquarters
which is designed to look like a happy meal box. It consists of (1) a
rectangle, (2) an isosceles triangle, and (3) a half circle cut out
(centered in the cross-section).
A. Find the moment of inertia of the shaded cross section about
the x axes (Ix)
B. Find the product of inertia of the cross section (Ixy).
Ans: A. IX=434.99 cm4, B. Ixy= - 236.13 cm4
half circle
cut out
Optional. Does not need to be submitted.
Ans: F=2.49 kN as A&B stick and slip on surface C