2. The bell crank which is in equilibrium under the forces shown in Fig. 2 is supported by a 20-mm-diameter pin at D that is in double shear. Determine (a) the required diameter of the connecting rod AB given that its tensile working stress is 100MPa and (b) the shear stress in the pin. # P A 200 mm D B 240 mm- 60° 30 kN C

A rigid bar ABCD is supported by two bars as shown in the figure. There is no strain in the vertical bars before load P is applied. After load P is applied, the normal strain in rod (1) is -1350 µm/m. Determine the normal strain in rod (2) if there is a 1-mm gap in the connection at pin C before the load is applied. A 240 mm B (1) O 1281 um/m O 1877 µm/m O 1141 µm/m O 1358 µm/m O 999 µm/m 360 mm (2) Rigid bar 900 mm C 140 mm, 1,500 mm

In the following structure, consider the following data:The connection at D is double and has a diameter of 50 mm. The beam BCDE has a thickness of 37.50 mm. The bar AB has a thickness of 37.50 mm and a width of 100. The connection at A is single and has a diameter of 67.50 mm.a. The normal stress in bar AB.b. The shear stress in the bolt at D.c. The shear stress in the bolt at A.d. The support stress between the beam and bolt D.

Problem 01.054-Analysis of an inverted T-frame In the steel structure shown, a 6-mm-diameter pin is used at C and 12-mm-diameter pins are used at B and D. The ultimate shearin stress is 150 MPa at all connections, and the ultimate normal stress is 340 MPa in link BD. Knowing that a factor of safety of 3.0 is desired, determine the largest load P that can be applied at A. Note that link BD is not reinforced around the pin holes. Front view. 160 mm D B 18 mm B Top view 120 mm largest load P that can be applied at A is 99252 2.328 KN. ED 6 mm 22B Side view