Question

It requires 25 N of force to move a 90 kg box 120 meters across a warehouse floor, then lift it 0.5 meter to put it in a truck. Calculate the total work done to load
this box.

Answer 1

Answer:

Horizontal Work done + vertical work done

Explanation:

1.) First calculate the work done to move box in horizontal direction:

W = Fs

= 25N × 120m

= 3000 Joules

2.) Work done against gravity in vertical direction:

Ep = mgh

= 90x10x.0.5

= 450 Joules

Total Work done = 3000 + 450 = 3450 Joules