Question

How much work does it take to raise a `14 kg` weight `2 m`?

Answer 1

It takes `-274.68J`.

Explanation:

You have to use the equation `L=-(U(B)-U(A))`, where `U=mgh`.
Substitute your values in the equation and find
`L=0-mgh=-(14kg*9.81m/s^2*2m)=-274.68J`.
That's all.