With a uniform movement of a 15 kg load along an inclined plane, a dynamometer tied to the load showed

With a uniform movement of a 15 kg load along an inclined plane, a dynamometer tied to the load showed a force equal to 40 N. Calculate the efficiency of an inclined plane if its length is 1.8 m, its height is 30 cm.

Data: uniform movement; m (cargo weight) = 15 kg; F (applied force) = 40 N; l (length of the inclined plane) = 1.8 m; h (lifting height, plane height) = 30 cm (SI h = 0.3 m).

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

To determine the efficiency of a given inclined plane, we will use the formula: η = Ap / Az = m * g * h / (F * l).

Let’s calculate: η = 15 * 10 * 0.3 / (40 * 1.8) = 0.625 or 62.5%.

Answer: The efficiency of a given inclined plane is 62.5%.