Question

the parallel and opposite forces f1 and f2 of magnitude of 20N and 15N act with their lines of action 2m apart as shown in the diagram. find moment A,B,and,O​

Answer 1

Answer:

Consider the point at which resultant of the forces will act, is 'x' m from the point A.

Thus the point is (1.5 - x) m far from the point B.

Thus, using the formula Torque = Distance x Force acting

20x=30(1.5−x)

or,2x=4.5−3x

or,5x=4.5

or, x=0.9mor90cm

Thus the resultant point will be 0.9 m or 90 cm far from point A