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Test Quescion Phaperfy of Newnerat State thiversity Questhon 10:9,238,263 Select all that apply to "simple trusses" a) T
Posted: Thu Jul 14, 2022 2:57 pm
by answerhappygod
- Test Quescion Phaperfy Of Newnerat State Thiversity Questhon 10 9 238 263 Select All That Apply To Simple Trusses A T 1 (85.84 KiB) Viewed 42 times
Test Quescion Phaperfy of Newnerat State thiversity Questhon 10:9,238,263 Select all that apply to "simple trusses" a) The members connect in such a way that triangular elements are always formed. b) The members are all two-force members C) The joints may be pinned or fixed. d) The joints must be pin connected e) The members may connect in such a way that both triawgular and rectangular elcments are always formed. ENGR 2214 Reference Sheet Cartesian Vectors Magnitude: F=Fxi^+Fy^+Fzk^F=Fx2+Fy2+Fz2 Position Vector: rAB=(xB−xA)i^+(yB−yA)j^+(zB−zA)k^ Unit vector: u^F=FF=Frx^+FFy^+FF2k^ =cosαi+cosβi+cosγk^ To convert a scalar force into Cartesian form: F=Fa^=F(rr) Dot Product: A⋅B=ABcosθ=AxBx+AyBy+AzBz To find the angle between 2 vectors: θ=cos−1(AB2AxBx+AyBy+AzBz) To find the projection of a voctor along a line: F⋅μ^tine=Fxux+Fyuy+Fzuz Moments To find the moment about a point (Cross Product-answer is a vecior): To find the moment ahout a line or axis ("Triple Scalar Product" answer is a scalar):