A body weighing 80kg is pulled along an inclined plane 4m long to a height of 50cm

A body weighing 80kg is pulled along an inclined plane 4m long to a height of 50cm, while applying a force of 200N. Find the efficiency of the inclined plane.

To calculate the efficiency of the used inclined plane, we will use the formula: η = Apol / Azat = m * g * h / (F * S).

Constants and variables: m is the mass of the body being moved (m = 80 kg); g – acceleration due to gravity (g ≈ 10 m / s2); h – final lifting height (h = 50 cm = 0.5 m); F – applied force (F = 200 N); S – body path (plane length, S = 4 m).

Calculation: η = m * g * h / (F * S) = 80 * 10 * 0.5 / (200 * 4) = 0.5 or 50%.

Answer: The used inclined plane has an efficiency of 50%.