In which case a lot of work is done: when moving the body at a distance of 10m.

In which case a lot of work is done: when moving the body at a distance of 10m. under the influence of a force of 2 N or when lifting a body weighing 500 g to a height of 4 m?

Given: S1 – body movement (S1 = 10 m); F1 – acting force (F1 = 2 N); m2 – mass of the lifted body (m2 = 500 g); h2 – lifting height (h2 = 4 m).

SI: m2 = 500 g = 0.5 kg.

Const: g – acceleration due to gravity (g ≈ 10 m / s2).

Decision:

1) Moving the body: A1 = F1 * S1 = 2 * 10 = 20 N.

2) Lifting the body: A2 = ΔEp = m2 * g * h2 = 0.5 * 10 * 4 = 20 N.

3) Comparison of works: A1 (20 N) = A2 (20 N).

Answer: The same work is done when moving and lifting the body.