Question

SON
b) Two parallel forces each of 50N act in the
opposite directions at a separation of 4m .
The distance between P and Q is lm.
Calculate the resultant moment about the
point (i) P
(i) P and (ii) Q.
Im
0
50N​

Answer 1

Answer:

Step-by-step explanation:

50 = 20 + 30

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