physics question

Question

How much work is done on a 2.50 kg box by carrying the box to the top of a set of stairs that is 12 meters in length and goes up 6 meters in elevation?

Answer 1

The work is done against gravity, so it is just the change in gravitational potential energy mgh = (2.50 kg)*(9.8 m/s²)*(6 m) = 147 J.