Question

A 30 kg weight is positioned 2 m from a fulcrum. At what distance from the fulcrum must a 40 kg weight be positioned to keep the scale balanced?

Answer 1

`1.5\ m`

Explanation:

Let `x` be the distance of `40` kg from the fulcrum then balancing the torque about the fulcrum

`40g\times x=30g\times 2`

`x=60/40`

`x=1.5\ m`