Determine the vertical and horizontal positions of the shear centre of the stiffener section below with respect to point O on the vertical web located half way between the top and bottom flanges. 2 mm 40 mm 25 mm

Determine the magnitude of the pin force at A. Assume W - 620 Ib, a- 4.6 ft, b-3.1 ft,r-8 in. C B W Answer: A- Ib

1-7. Determine the resultant internal loading on the cross section through point D of the pliers. There is a pin at A, and the jaws at B are smooth. 20 N 20 N -120 mm- 80 mm 30° 40 mm 15 mm B

Determine the reactions at the supports. Draw FBD first. a). CLEARLY SHOW ALL WORK. B F G TH 200 Ib Scale: I unit -5 ft 200 1Ь 200 Ib Reaction at A (x-direction) Reaction at A (y-direction) = _[lb] _[lb] Reaction at E (x-direction) = Reaction at E (y-direction) =, [Ib] fib] b) Determine the ZERO FORCE MEMBERS. Fully justify your answer. Zero force member #1 (if any) = Zero force member #2 (if any) = Zero force member #3 (if any) =. c) Determine the loads in members: AF, AB and BC. Fully justify your answer. Load in member AB =. Load in member AF = Load in member BC =. Ib Ib Ib

The bridge is pinned at A and has a roller at G. A downward load of 12.5 lb is applied at point C, and a downward load of 25 lb is applied at E. The support reactions at the pin and roller are shown on the image. Find the stress in members making up the bridge using either the method of joints or method of sections.

Q-1 Link-2, shown in the figure, is 30 mm wide, has 12 mm diameter bearings atthe ends, and is cut from low carbon steel bar having a minimum yield strength of190 MPa. The end-condition constants for link-2 are C = 1 and C = 1.2 for bucklingin and out of the drawing, respectively.a) Draw necessary and clear free-body diagrams to determine the reactions atthe supports and the load on both member-2 and member-3. b) Determine a suitable thickness for link-2, based on a design factor of safetyηD = 4, and considering a material having E = 207 GPa, and a minimum yieldstrength Sy = 350 MPa.c) Determine the stress and resulting factor of safety for each pin, and state yoursuggestions in case of design factors less than 4.

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F5. The circular shaft AC is fixed to rigid walls at A and C. The section AB is solid annealed bronze and the hollow section BC is made of aluminum alloy 2024 T-4. There is no stress in the shaft before the 20,000 ft-lb torque is applied. Determine the maximum shearing stress in each shaft after T is applied. Section BC 4 D=4" 20 ft-k 6.5-FE B 5ft Match each item to a choice: TAB TBC 2"

The figure shows a roof truss and the detail of the connection at joint B. Members BC and BE are angle sections with the thickness shown in the figure. The working stresses are 70MPa for shear in the rivets and 140MPa for bearing stress due to the rivets. How many 22mm diameter rivets are required to fasten the following members to the gusset plate: (a) BC; and (b) BE? 000 4 m B с 96 kN D 6 m E 200 KN 4 m F G 4 m 96 kN H to- PBC - -14-mm-thick gusset plate -13-mm-thick angle 6-mm-thick angle PBE

Member ACDF is a rigid bar. Links BC and DE are made of steel (E = 29,000 ksi) and are ½/2" wide and ¼" thick. If the applied force P is 1000 lb, what is the force in each of the links and the deflection of point A? B -4 in. D F 4 in. 2 in. 2 in -5 in.- 2210