The height of the inclined plane is 1.2m, and the length is 12m. To lift a weight of 200 kg

The height of the inclined plane is 1.2m, and the length is 12m. To lift a weight of 200 kg along this inclined plane, a force of 250 N. was required. Determine the efficiency of the inclined plane.

Data: h (height of the inclined plane) = 1.2 m; l (length) = 12 m; m (cargo weight) = 200 kg; F (required force) = 250 N; g (acceleration due to gravity) ≈ 10 m / s2.

Efficiency of an inclined plane: η = m * g * h / (F * l) = 200 * 10 * 1.2 / (250 * 12) = 0.8 (80%).

Answer: The efficiency of the plane is 80%.