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2019 SWK 211 prac 3 - Pappus-Guldinus & hydro 18 Feb - answers

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STATICS / STATIKA SWK211
Homework problems – Tutorial class 3
9‐86
Centroid: x = 9.178m; L = 23.66m; A = 1365m2
9‐89
Volume = 0.0486m3
9‐100 Centroid of perimeter = 43.23mm, Surface area = 52 187mm2
Centroid of cross‐section area = 46.05mm, Volume = 263 458mm2 (0.000 263m2)
9‐111 h = 29.85mm
9‐105 d = 2.683m
9‐116 Fc = 3.014kN
9‐117 FoS = 2.66
9‐124 FR = 48.04kN passing directly through downstream toe of dam wall, i.e. zero metres
above toe.
Ed 14 9‐116 FR = 24kN acting at x = 2m, y = 1.333
Ed 14 9‐128 FH = 73.575kN, FV = 70.069kN, FR = 101.6kN. FR intersects floor 1.914m to the
right of A.
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