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Name:_______________ 4-3-2015 ME2570. Mechanics of Materials – TEST No. 3 1. A cantilevered I–beam is subjected to a 2500 N transverse force as shown. Determine the maximum tensile stress in the beam and its location. (35 pts.) ME2570 Mechanics of Materials. 3rd Test 4–3–2015 2. A channel–shaped cross–section is fabricated with three boards that are nailed together as shown. If the beam is subjected to a shear force V = 200 lb and the space between nails is 5 in., what is the shear force carried by each nail? (35 pts) ME2570 Mechanics of Materials. 3rd Test 2 4–3–2015 3. Determine the maximum shear stress in the cross-section shown when it is subjected to a shear force of 30 kN. (30 pts.) ME2570 Mechanics of Materials. 3rd Test 3 4–3–2015 Equation-sheet Third Test =− =− = + = = ! = ! = + = − + = + "# $ −2 '(2* = − = Σ = 0Σ = 0 Additional relations: Theorem of parallel axis: + + 2 + 2 +,!,+. + − ME2570 Mechanics of Materials. 3rd Test − 2 ! = − 2 = + 2 ! + "%̅ ̅ ± 01 cos 2 − cos 2 + − $ 2 + 2 $ 2 2 4