With a uniform movement of a load weighing 30 kg along an inclined plane, a force of 80 N was applied.

With a uniform movement of a load weighing 30 kg along an inclined plane, a force of 80 N was applied. Calculate the efficiency of the plane if its length is 3.6 m and its height is 60 cm.

Given: m (mass of uniformly displaced load) = 30 kg; F (force applied to the load) = 80 N; l (plane length, distance traveled by the load) = 3.6 m; h (plane height) = 60 cm (in SI h = 0.6 m).
Constants: g (acceleration due to gravity) ≈ 10 m / s2.
To calculate the efficiency of the taken inclined plane, we will use the formula: η = Ap / Az = m * g * h / (F * l).
Calculation: η = 30 * 10 * 0.6 / (80 * 3.6) = 180/288 = 0.625 or 62.5%.
Answer: The taken inclined plane has an efficiency of 62.5%.