Respuesta :
The work done is equal to the weight (mg) of the bucket times the altitude at which it is raised, h:
[tex]W=mgh[/tex]
Let's calculate the work for the 3 scenarios:
[tex]W_A = (7 N)(6 m)=42 J[/tex]
[tex]W_B=(10 N)(4 m)=40 J[/tex]
[tex]W_C=(12 N)(3 m)=36 J[/tex]
So, the scenario which requires more work is scenario A.
[tex]W=mgh[/tex]
Let's calculate the work for the 3 scenarios:
[tex]W_A = (7 N)(6 m)=42 J[/tex]
[tex]W_B=(10 N)(4 m)=40 J[/tex]
[tex]W_C=(12 N)(3 m)=36 J[/tex]
So, the scenario which requires more work is scenario A.