A lever with three loads, 11 N, 6 N and 4 N placed is shown above. How do we determine whether the lever is balanced now ? We can do so by calculating the moment of each individual force and adding them together according to their directions.
Moment of 11 N force = 11 × 4
= 44 N m (anticlockwise)
Moment of 6 N force = 6 × 2
= 12 × N m (clockwise)
Moment of 4 N force = 4 × (6 + 2 )
= 32 N m (clockwise)