P2.6 (WP) The rigid bar ABC is supported by three bars as shown in Figure P2.6. Bars (1) attached at A and Care identical, each having a length L, = 160 in. Bar (2) has a length L, = 110 in.; however, there is a clearance c = 0.25 in. between bar (2) and the pin in the rigid bar at B. There is no strain in the bars before load P is applied, and a = 50 in. After application of load P, the tensile normal strain in bar (2) is measured as g60 µɛ. What is the normal strain in bars (1)? a (1) (1) |(2) L2 Rigid bar FIGURE P2.6

P2.6 (WP) The rigid bar ABC is supported by three bars as shown in Figure P2.6. Bars (1) attached at A and Care identical, each having a length L, = 160 in. Bar (2) has a length L, = 110 in.; however, there is a clearance c = 0.25 in. between bar (2) and the pin in the rigid bar at B. There is no strain in the bars before load P is applied, and a = 50 in. After application of load P, the tensile normal strain in bar (2) is measured as g60 µɛ. What is the normal strain in bars (1)? a (1) (1) |(2) L2 Rigid bar FIGURE P2.6

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 2.2.16P: A uniform bar AB of weight W = 25 N is supported by two springs, as shown in the figure. The spring...

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A uniform bar AB of weight W = 25 N is supported by two springs, as shown in the figure. The spring on the left has a stiffness k[= 300 N/m and natural length Lt=250 mm. The corresponding quantities for the spring on the right are k2= 400 N/m and L^ = 200 mm. The distance between the springs is L = 350 mm, and the spring on the right is suspended from a support that is a distance it = SO mm below the point of support for the spring on the left. Neglect the weight of the springs. (a) At what distance x from the left-hand spring (figure part a) should a load P = 18 N be placed in order to bring the bar to a horizontal position? (b) If P is now removed, what new value of k{is required so that the bar (figure part a) will hang in a horizontal position underweight If? (c) If P is removed and kt= 300 N/m. what distance b should spring ktbe moved to the right so that the bar (figure part a) will hang in a horizontal position under weight II"? (d) If the spring on the left is now replaced by two springs in series (kt= 300 N/m, kt) with overall natural length Lt= 250 mm (see figure part b). what value of k; is required so that the bar will hang in a horizontal position under weight IF?
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