Question

How much work does it take to raise a `8 kg` weight `3 m`?

Answer 1

this straight forward of work equation that is
`W = F Deltax => int_a ^bF dx`
In your case `F = mg; m = 8 kg; g = 9.81 m/s^2; and Deltax = 3 m`
`W = 8xx9.81xx3 ~~ 235 J`