Problem 4 When = 30°, the 50-kg uniform block compresses the two horizontal springs 100 mm. Take k = 10 kN/m and neglect the mass of the links. (a) Draw the free body diagram and specify the positions of the gravity center of the block (y) and deformation of the spring (x), and express y and x, in terms of 0. (b) Find the virtual displacement Sy, and 8x of the positions due to a virtual rotation 80. (c) Write the virtual work equation. S (d) Determine the magnitude of the applied couple moments M needed to maintain equilibrium. 50 mm 400 mm k 100 mm 200 mm 100 mm Fig. 4 2 M B M

Problem 4 When = 30°, the 50-kg uniform block compresses the two horizontal springs 100 mm. Take k = 10 kN/m and neglect the mass of the links. (a) Draw the free body diagram and specify the positions of the gravity center of the block (y) and deformation of the spring (x), and express y and x, in terms of 0. (b) Find the virtual displacement Sy, and 8x of the positions due to a virtual rotation 80. (c) Write the virtual work equation. S (d) Determine the magnitude of the applied couple moments M needed to maintain equilibrium. 50 mm 400 mm k 100 mm 200 mm 100 mm Fig. 4 2 M B M

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter6: Vertical Stress Increase In Soil

Section: Chapter Questions

Problem 6.4P: Refer to Figure P6.4. A strip load of q = 900 lb/ft2 is applied over a width B = 36 ft. Determine...

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