Answer:
C). W = 50 J
Explanation:
As we know that the work done is the product of force and displacement
so here it is given that the net force on the stack of books is 25 N
[tex]F = 25 N[/tex]
also the displacement of the stack of books is 2m as it is lifted upwards
so we have
[tex]d = 2 m[/tex]
now by the formula of work done we know
[tex]W = F.d[/tex]
now plug in all values in it
[tex]W = (25)(2)[/tex]
[tex]W = 50 J[/tex]
