У B = 30° M = 400 lb-in. 0.6 in. 0.6 in. 0.4 in.

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4. The bars of the truss below each are made of 2 in. diameter rods. If the maximum average normal stress in any bar is not to exceed 30 ksi, determine the maximum magnitude P of the loads that can be applied to the truss. P A 4 ft 4 ft D -3 ft C E

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1 in. 4. The rod has a diameter of 40 mm. If it is subjected to the force system shown, determine the state of stress (all the stress components) at point A. 1500 N 600 N 300 mm 100 N·m 800 N 100 mm

3. The beam is made of steel that has an allowable stress of oallow = 40 ksi. Determine the largest internal moment the beam can resist if the moment is applied (a) about the z axis, (b) about the y axis. 3 in 0.25 in. 0.25 in. 3 in. 3 in. 3 in. 10.25 in.

The cantilever beam AB will be installed so that the 60-mm side forms an angle β between 0 and 90° with the vertical. The 660-N vertical force P is applied at the center of the free end of the beam. Determine the value of β for which the normal stress at point a is a maximum and the corresponding value of that stress. (Round the final answer to two decimal places.)

Knowing that the clamp shown has been tightened until P= 400 N, determine (a) the stress at point A, (b) the stress at point B, (c) the location of the neutral axis of section a-a.

1. If the built-up beam is subjected to an internal moment of M =,50 kN.m, determine the maximum tensile and compressive stress acting in the beam. 20 mm 150 mm 300 mm 150 mm M 10 mm 10 mm 150 mm