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Unformatted text preview: Equilibrium of a Particle Lecture 5Coplanar Force System (Sections 3.13.3) PROBLEMS FOR RECITATION SESSION RECITATION PROBLEM (RC1)1 The cords BCA and CD can each support a maximum load of 100 lb. Determine the maximum weight of the crate and the angle θ at equilibrium. RECITATION PROBLEM (RC1)1 Draw FBD at C: X Y F CD C F CA =T F CB = T 13 5 12 θ CB and CA are the same cord: Solution RC1 (continued) X Y F CD C F CA =T F CB = T 13 5 12 θ Equilibrium of horizontal forces: θ θ cos 5 13 13 5 cos ⋅ ⋅ = = ⋅ ⋅ = ∑ CD CD x F T T F F Equilibrium of vertical forces: θ θ θ sin 25 13 sin 13 13 12 13 12 sin ⋅ ⋅ = ⋅ = ⋅ + = ⋅ ⋅ = ∑ CD CD CD y F T F T T T F F Solution RC1 (continued) ( 29 ° = = = ⋅ = ⋅ ⋅ ⋅ ⋅ = 69 .....
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This note was uploaded on 06/14/2009 for the course CE 221 taught by Professor Buch during the Spring '08 term at Michigan State University.
 Spring '08
 Buch

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