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Homework5b.spring11

# Homework5b.spring11 - ME 352 Machine Design I Spring...

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ME 352 - Machine Design I Name of Student__ _________________________ Spring Semester 2011 Lab Section Number ________________________ Homework No. 5 (30 points). Due at the beginning of lecture on Monday, February 21st. Consider the sliding-block linkage shown in Example 2.5, Figure 2.24, page 77, and repeated here as Figure 1. The length of the ground link is 1 4 2 R O O 9 inches = = and the length of link 2 is 2 2 R O A 4.5 inches. = = The position solution for the input angle o 2 135 θ = can be obtained from trigonometry and the answers are 34 4 R O A 12.59 inches = = and . o 34 3 4 104.64 θ = θ = θ = The angular velocity and the angular acceleration of the input link 2 are 2 5 k rad s ω = − / and 2 2 10 k rad s , α = / respectively. The length of link 4 is 4 O C 20 inches = and note that the origin of the XY reference frame is now chosen to be coincident with the ground pin O 2 , see Figure 1. Part A. Use the vector loop approach to determine the first-order kinematic coefficients and the
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