chapter 3-1

# chapter 3-1 - EQUILIBRIUM OF A PARTICLE IN 2-D Today's...

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Lecture Notes for Sections 3.1-3.3 1 EQUILIBRIUM OF A PARTICLE IN 2-D Today’s Objectives : Students will be able to : a) Draw a free body diagram (FBD), and, b) Apply equations of equilibrium to solve a 2-D problem. In-Class Activities : Reading quiz Applications What, why and how of a FBD Equations of equilibrium Analysis of spring and pulleys Concept quiz Group problem solving Attention quiz READING QUIZ 1) When a particle is in equilibrium, the sum of forces acting on it equals ___ . (Choose the most appropriate answer) A) a constant B) a positive number C) zero D) a negative number E) an integer. 2) For a frictionless pulley and cable, tensions in the cable (T 1 and T 2 ) are related as _____ . A) T 1 > T 2 B) T 1 = T 2 C) T 1 < T 2 D) T 1 = T 2 sin θ

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