3 What is the stress in specific weight of the material is y

3. What is the stress (in specific weight of the material is y in Ibßift?) at surface S of the cylindrical obiect it F -3500 pounds and the Y 490 lbfn? Answer- 3500 b 1.5 2 tr 4. A 100\" long aluminum bar is subjected to a tensile stress, , of 25,000 psi. Find the elongation, . (E-10 x 10° psi). Answer- 5. A 6\" diameter rivet undergoes a shear force of V= 1750 pounds. Find the average shea (in psi) in the rivet. Answer- 6 n

Solution

3) Area at contact = 3.14*1*1/4

=0.785 ft²

Stress at contact surface = Load/Area

= 3500/0.785

=4458.6 lb/ft²

4) Elongation = (Stress* length / E)

=25000*100/10000000

=0.25 inch