is a rectangle in which , and is midpoint of . Forces of magnitudes 7 N, 2 N, 6 N, 18 N, N, and N are acting along , , , , , and respectively. If this system of forces is equivalent to a couple, find the norm of its moment.
The sides of an equilateral triangle , taken the same way round, completely represent three forces with a drawing scale of 4 cm to 8 N. If the length of a side of the triangle is 24 cm, find the magnitude of the resulting couple, giving an exact answer in N⋅cm.
is a rod having a length of 105 cm and negligible weight. Forces of magnitudes 214 N, 67 N, 115 N, and 176 N are acting on the rod as shown in the figure. Given that and are the points of trisection of , determine the algebraic sum of the moments of these forces about the point .