Page 19 - statbility for masters and mates

Forces and moments 7
metres from one end and a second load of mass 30 kilograms is placed at a distance of one metre from the other end. Find the resultant moment about the middle of the plank.
Fig. 1.8(b)
Moments are taken about O, the middle of the plank.
Clockwise moment 30 0:5 15 kg m
Anti-clockwise moment 10 1 10 kg m Resultant moment 15 10
Ans. Resultant moment 5 kg m clockwise