EM 306 – Statics Name and EID Exam 1 Fall 2019 - Landis ___________________________________ Section Day/Time ___________________________________ All problems require correctly drawn and labeled free body diagrams for each component that you perform an equilibrium analysis on. Problem 1. Determine the axial forces in all of the truss members. Indicate whether each is in tension or compression. (20 points) Problem 2. All components are weightless. Determine the moment required to maintain equilibrium in the position shown in terms of the applied force P. (20 points) P EM 306 – Statics Exam 1 Fall 2019 - Landis Problem 3. The contact interactions between the plunger and all surfaces are frictionless and act through point B. All components are weightless. Determine the crushing force on the can. Hint: The problem is made much easier if you first determine Ay . (20 points) ① EM c) Fall 2019 306 3K¥ Ax → - 44000 Tay From A) AE It EFy= c) =3 - EFy= Efx E) - Efx Eff = = = 4FAB - DE - - - - ICE o → ¥BE=o - - lbs . Cc ) AE → DE BC = ) Elt 4 cc ) ITH) = BE → ¥cD=o→ ECETZSCD 1000 1000 . IAB tIBEtBC=o→ - = Ay = rid - - - ← ¥AB=o→AB= E ICD 3000 O → - kips DE EFy= 3t¥cD=o→cD= - = 93 3tIABtAE=o - AE -3000 CD d -_ Dy Dy 4 Eff Efx + → 12.4000-8-3000=0 - in are ←→ DE EF×= B) 4000 BETTE AE •→ EFx= D) - CELLS BE AB = BC , BC →g→ ↳ g T, 3oootAx=0 all forces on AB 3 Eff EFy= Ay 3 ← 1 EMzA= +24dg TDY here Solutions Exam 5 4- It ) Icc ) - Bc CE → -_ = Ett ) fi I I - ' - - - + EBEtEcE=o→ ET tf Z,t¥=o 4t¥BEt¥cE=o→ 4+1+3=5 AETDE - - - - 2) ② ÷ → ox # MS LBC ② JALSA , y ① E ME = - pas ) - BC ② EME = M = - F- Bell8) -44BC (3) =D M¥+4 'T Bc (m ) t - = MATE ) d=E o D= #4CH)PT 7.97 P TIE \ - c it → B = BC '4 22.02 = 3) B T%→o× ① ¥7: → ① EME = ② EMI = ① t 4403=0 Ay - p (297) EEE Bt - " → Ay - . O Ax ( Ez 74=0 Axed → AE - 4.76 P '0=0ffA¥YfIz%sX - * that Note 2on force it the member act plunger is because through only actually all of 2 a the forces points .