220_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

# 220_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

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214 CHAPTER 2 Axially Loaded Members (b) M AXIMUM TENSILE STRESS (E Q . 2–55) ; s max E d max L 26,000 psi (c) I MPACT FACTOR (E Q . 2-61) ; 130 Impact factor d max d st 0.0312 in. 0.00024 in. Problem 2.8-4 A block weighing W 5.0 N drops inside a cylinder from a height h 200 mm onto a spring having stiffness k 90 N/m (see figure). (a) Determine the maximum shortening of the spring due to the impact, and (b) determine the impact factor.

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