A power screw having single start square threads of 25 mmnominal diameter and 5 mm pitch is acted upon by an axial load of10 kN. The outer and inner diameters of screw collar are 50 mm and20 mm respectively. The coefficient of thread friction and collarfriction may be assumed as 0.2 and 0.15 respectively. The allowablethread bearing pressure is 5.8 N/mm², find:1. The torque required to rotate the screw during raising andlowering the load.2. The maximum shear stress in the screw.3. The number of threads of nut in engagement with the screw.

Nominal Diameter, do = 25 mm Pitch, p = 5 mm Axial Load, W = 10 kN = 10 x 103 N Outer Diameter, D1…

Answered: A power screw having single start…

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter11: Columns

Section: Chapter Questions

Problem 11.2.4P: Repeat Problem 11.2-3 assuming that R= 10 kN · m/rad and L = 2 m.

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