Question 2 You are holding a thin and weightless bar on your head (see figure 2.1). On the extremity 4, the bar is attached to an elastic spring with unstressed length of 1 m and spring constant, k = 50 N/m; on the other extremity D, the bar is against a wall. On point C, a force F is applied, forming a 45-degree angle with the bar. Assign the length AE according to the height of your body. (a) What is the magnitude of the force F for the bar to rest horizontally? (b) If the force ♬ was removed, what support would you need in D in place of the wall, in order to keep the bar at rest horizontally? Justify your suggestion(s). State and justify your assumptions and comment on your solutions. 2m Im Im F = C D

Question 2 You are holding a thin and weightless bar on your head (see figure 2.1). On the extremity 4, the bar is attached to an elastic spring with unstressed length of 1 m and spring constant, k = 50 N/m; on the other extremity D, the bar is against a wall. On point C, a force F is applied, forming a 45-degree angle with the bar. Assign the length AE according to the height of your body. (a) What is the magnitude of the force F for the bar to rest horizontally? (b) If the force ♬ was removed, what support would you need in D in place of the wall, in order to keep the bar at rest horizontally? Justify your suggestion(s). State and justify your assumptions and comment on your solutions. 2m Im Im F = C D

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter2: Axially Loaded Members

Section: Chapter Questions

Problem 2.5.29P: A polyethylene tube (length L) has a cap that when installed compresses a spring (with under-formed...

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