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4–114. The three forces act on the pipe assembly. If zF1 = 50 N and F2 = 80 N, replace this force system by an equivalent resultant force and couple moment acting at O.Express the results in Cartesian vector form. 180 N
1.25 m O y
F2
x 0.5 mF1
0.75 m
4–115. Handle forces F1 and F2 are applied to the electric F2 {2j 4k} Ndrill. Replace this force system by an equivalent resultantforce and couple moment acting at point O. Express the zresults in Cartesian vector form. 0.15 m F {6i 3j 10k} N
4–130. The building slab is subjected to four parallel zcolumn loadings. Determine the equivalent resultant force and specify its location (x, y) on the slab. Take F1 = 20 kN, F2 = 50 kN.
F2
4 m y
8 m 6 m
2 m
4–131. The tube supports the four parallel forces. zDetermine the magnitudes of forces FC and FD acting at C FD
and D so that the equivalent resultant force of the forcesystem acts through the midpoint O of the tube. 600 N
4–134. If FA = 40 kN and FB = 35 kN, determine the zmagnitude of the resultant force and specify the location ofits point of application (x, y) on the slab.
function w = 10.5x3 N>m. Simplify this distributed to an equivalent resultant force and specify its
3
p (4
z ) kPa
4
w (0.5x3) N/m
A
*4–152. Wind has blown sand over a platform such that wthe intensity of the load can be approximated by the 500 N/m
2
and location measured from A.
x
10 m
•4–153. Wet concrete exerts a pressure distribution along pthe wall of the form. Determine the resultant force of thisdistribution and specify the height h where the bracing strut should be placed so that it lies through the line of action of the resultant force. The wall has a width of 5 m.