{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture 17 Exam 2

# Lecture 17 Exam 2 - ME 221 Statics Lecture#19 Sections 9.1...

This preview shows pages 1–8. Sign up to view the full content.

ME 221 Lecture 17 1 ME 221 Statics Lecture #19 Sections 9.1 - 9.6 Exam #2 Review

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
ME 221 Lecture 17 2 Homework #6 Chapter 4 problems: 2, 4, 10, 11, 18, 24, 39, 42, 43 & 47 Due Today
ME 221 Lecture 17 3 Homework #7 Chapter 4 problems: 52, 53 & 54 Chapter 9 problems: 2, 3, 4, 11, 23, 29, 32 Use double integration for 2, 3, 4 & 11 Due Friday, October 17

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
ME 221 Lecture 17 4 Exam 2 Friday, October 10 More on the exam later in the hour
ME 221 Lecture 17 5 Moments of Area Characterizes the way area is distributed about the centroid Area Moment of Inertia (Second moment of an area) Always a positive value with units of in 4 , mm 4 , ft 4 , m 4 , etc. dA y x r 2 2 and xx yy A A I y dA I x dA = =

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
ME 221 Lecture 17 6 Example dx dy x y x y dA=dxdy dI xx =y 2 dA dI yy =x 2 dA dx x y dA=(a-x)dy dI xx =y 2 dA dA=ydx dI yy =x 2 dA dx dy x y a use horizontal element for value in x use vertical element for value in y
ME 221 Lecture 17 7 Moments of Basic Shapes Rectangle x y 2 2 2 2 2 b h b h xx I y dy dx - - = ∫ ∫ ( 29 ( 29 2 2 3 3 2 2 = 3 3 b

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 13

Lecture 17 Exam 2 - ME 221 Statics Lecture#19 Sections 9.1...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online