ME 221 Statics Exam 1 Review ME 221

ME 221 Statics Exam #1 Review ME 221 Exam 1 Review

Homework • Due today: – Chapter 2 problems: – 61, 64, 70, 71, 72, 86, 94, 105 & 113 • Grades posted in Angel – HW #1 & Quiz #1 (and solutions) – HW #2 & Quiz #2 (solutions posted) – HW #3 solutions to be posted late today ME 221 Exam 1 Review 2

Exam 1 • Wednesday, September 17 ME 221 Exam 1 Review 3

Exam Format • Similar to homework problems • 5 or 6 (maybe 7) problems • No new concepts • Closed books and closed notes • 15% of final grade • Will need a calculator • Back rows must sit every other seat ME 221 Exam 1 Review 4

Exam 1 Helpful Hints • Study by working homework problems • Review the examples in the book • Read the exam questions carefully • Work the problems you know first • Use a logical flow to show your knowledge • Be complete ME 221 Exam 1 Review 5

Exam 1 Pitfalls • Vectors have both magnitude and direction • Most answers will have units • Calculated answers should be in decimal form • Use 3 significant figures where appropriate • Answers are generally worth ~1/3 of points • Steps leading to answers are worth ~2/3 ME 221 Exam 1 Review 6

Exam 1 Topics • All of Chapters 1 & 2 except 2. 11 Springs • Newton’s Laws • Units • Scalars & vectors; defining, adding, etc. • Laws of sine and cosine • Resolution of a vector into components ME 221 Exam 1 Review 7

Exam 1 Topics • 3 D coordinates & unit base vectors • Directional cosines • Nonorthogonal vector components • Scalar products of vectors • 2 D & 3 D equilibrium problems • Drawing a good free-body diagram ME 221 Exam 1 Review 8

Exam 1 Exams will be graded Wednesday night Scores will be posted on Angel late Wednesday or early Thursday Last day to drop with full refund is Thursday ME 221 Exam 1 Review 9

Exam 1 Historical Data Of those students below 60 points on exam 1: ~30% dropped the course ~24% received 0. 0 for final grade ~46% passed the course None has finished above a 2. 5 final grade ME 221 Exam 1 Review 10