# Mechanics of Materials

## Learning outcomes

Statics Review:
• Explain the concept of centroid as the center of cross-sectional area.
• Memorize the equation for moment of inertia of a rectangular cross-section.
• Compute y bar for a composite shape by using an additive method (solids)
• Compute y bar for a composite shape by using a subtractive method (solids and voids).
• Identify the location of the centroid by inspection for cross-sections with a line of symmetry.
• Apply the parallel axis theorem to compute the centroidal moment of inertia using an additive method (solids).
• Apply the parallel axis theorem to compute the centroidal moment of inertia using a subtractive methods (solids and voids).
This Course:
1. Explain the relationship between the moment of inertia and the magnitude of beam stresses, strains, and deflections.
2. Distinguish between strong-axis bending and weak-axis bending.
3. Given a cross-section, determine which centroidal axis is the strong-axis and which is the weak-axis.

## In-Class Notes

LE13 Centroid and Moment of Inertia.pdf

## Homework

HW13 Centroid and Moment of Inertia.pdf