Question

Total word done on the box is

Answer 1

First let us calculate the work done (W₁) to pull it through a distance of 2m. Given that the box is pulled by a force of 10 N.

Work done, W₁ = Force x Displacement = 10 x 2 = 20 J

Now, let the work done to lift the box up in the air by 1m be W₂. Weight (mg) of the box is given as 50 N

Work done, W₂ = Force x Displacement = 50 x 1 = 50 J

Thus, the total work done = W₁ + W₂ = 20 + 50 = 70 Joules.

Hope it helps!!