7-23. The metal stud punch is subjected to a force of 120 N on the handle. Determine the magnitude of the reactive force at the pin A and in the short link BC. Aso, determine the resultant internal loadings acting on the cross section at point D. 120 N 50 mm 100 mim 60 50 mm DV 00 mm 300 mm 200 mm

Determine the resultant internal loadings at cross sections at points E and F on the assembly. 1.25 kN/m D E 0.5 m 0.5 m 0.5 m B 1 m -1.5 m 2 m

The bar of negligible weight is supported by two springs,each having a stiffness k = 80 N>m. If the springs are originally unstretched, and the force is vertical as shown,determine the angle theta the bar makes with the horizontal,when the 45-N force is applied to the bar. 1.5 m- 3 m C В 45 N

F=150lb a=6in bd=8in

*3-12. Fiberglass has a stress-strain diagram as shown. If a 50-mm-diameter bar of length 2 m made from this material is subjected to an axial tensile load of 60 kN, determine its elongation. σ (Pa) 300(10%) 1/2 €(mm/mm)

P = 93.3 N Determine the force at F. Take it apart to help you solve

The acrylic plastic rod is 200 mm long and 15 mm in diameter. If an axial load of 300 N is applied to it, determine the change in its length and the change in its diameter. Ep = 2.70 GPa, np = 0.4.

7-18. The shaft is supported at its ends by two bearings A and B and is subjected to the forces applied to the pulleys fixed to the shaft. Determine the resultant internal loadings acting on the cross section at point C. The 400-N forces act in the -z direction and the 200-N and 80-N forces act in the +y direction. The journal bearings at A and B exert only y and z components of force on the shaft. X A 200 mm 300 mm 200 mm 400 N 150 mm 150 mm 400 N D 400 mm 200 N Prob. 7-18 B 200 N Z 80 N 80 N y