Figure shows the forces acting on a body. Each square is 3 cm x 3 cm. If F1 = 30 N, F2 = 15 N, F3 = 25 N and F4 = 20 N, the resultant force and the moment about point O, respectively, are

Figure shows the forces acting on a body. Each square is 3 cm x 3 cm.

1.	Figure shows the forces acting on a body. Each square is 3 cm x 3 cm. If F1 = 30 N, F2 = 15 N, F3 = 25 N and F4 = 20 N, the resultant force and the moment about point O, respectively, are
A.	0 N, 0 Ncm
B.	90 N, 80 Ncm
C.	60 N, 60 Ncm
D.	30 N, 30 Ncm
Answer» B. 90 N, 80 Ncm

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Figure shows the forces acting on a body. Each square is 3 cm x 3 cm. If F1 = 30 N, F2 = 15 N, F3 = 25 N and F4 = 20 N, the resultant force and the moment about point O, respectively, are

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