. The diagram below (fig. 1.32)
The diagram below (fig. 1.32) shows a uniform bar supported at the middle point O. A weight of 40gf is placed at a distance 40 cm to the left of the point O. How can you balance the bar with a weight of 80 gf?
Anticlockwise moment= 40 gf x 40 cm
Clockwise moment= 80 gf x d cm
From the principle of moments,
Anticlockwise moment= Clockwise moment
40 gf x 40 cm =80 gf x d
So, d =