Two forces each of 4 N act on the opposite sides of a rectangular plate as shown in the diagram above. Calculate the magnitude of g the couple acting on the plate.
Attached Figure / Diagram
A
6.4 Nm
B
3.2 Nm
C
1.6 Nm
D
0.8 Nm
E
0.0 Nm
Verified Correct Answer: C.
Physical Principles & Numerical Solution
couple moment = F x d = 4 x 0.4 = 1.6Nm
Source: Myschool Past Questions Archive (Record #24087)