11.A load of 2 kN is dropped axially on a close coiled helical spring, from a height of 250 mm. The springhas 20 effective turns, and it is made of 25 mm diameter wire. The spring index is 8. Find the maximumshear stress induced in the spring and the amount of compression produced. The modulus of rigidityfor the material of the spring wire is 84 kN/mm².[Ans. 287 MPa; 290 mm]higoted to a load which varies

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Answered: 11. A load of 2 kN is dropped axially…

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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1. Design a compression helical spring to carry a load of 500 N with a deflection of 25 mm. The spring index may be taken as 8. Assume the following values for the spring material: Permissible shear stress = 350 MPa Modulus of rigidity = 84 kN/mm2 4С - 1 0.615 Wahl's factor where C-spring index. 4С - 4
Design a compression helical spring to carry a load of 500 N with a deflection of 25 mm. The spring index may be taken as 8. Assume the following values for the spring material: Permissible shear stress 350 MPa Modulus of rigidity = 84 kN/mm? 4С -1 0.615 Wahl's factor 4C – 4 where C= spring index. C [Ans. d= 5.893 mm; D= 47.144 mm;n=6| %3D

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