Solution Found!
Determine the moment of inertia
Chapter 10, Problem 10-47(choose chapter or problem)
QUESTION:
Determine the moment of inertia of the shaded area about the y axis
Questions & Answers
QUESTION:
Determine the moment of inertia of the shaded area about the y axis
ANSWER:
Step 1 of 3
We can divide this composite body into a two triangle and rectangle with a circular hole .Since we know how to calculate the moment of inertia of rectangle and circle we can construct our rectangle with a hole from a rectangle of a positive area and a circle of a negative area.
The centroid of a triangle is above its base (this works for every triangle and every base).