Question

How much work does it take to raise a `12 kg` weight `1 m`?

Answer 1

Here work is done against the gravitational force which supplies the required amount of potential energy to be at `1m` above the ground. (Considering ground to be the reference level)

So,potential energy of the mass `1m` above the ground is `mgh=12×9.8×1=117.6J`