Question

How much work is done when a 48-kg stack of books are lifted 2m with a net force of 25 N ?

A. 12.4 J
B. 100 J
C. 50 J
D. 96 J ...?

Answer 1

C). W = 50 J

Step-by-step 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

`F = 25 N`

also the displacement of the stack of books is 2m as it is lifted upwards

so we have

`d = 2 m`

now by the formula of work done we know

`W = F.d`

now plug in all values in it

`W = (25)(2)`

`W = 50 J`

Answer 2

Work = force x displacement
W = 25 x 2
W= 50 J