A body weighing 50 kg was evenly lifted along an inclined plane 1 meter high, while the work expended was 700 joules. The efficiency of the inclined plane is …
Data: h (height of the taken inclined plane) = 1 m; m (mass of the body lifted using the plane) = 50 kg; Az (work expended) = 700 J.
Constants: g (acceleration due to gravity) ≈ 10 m / s2.
To determine the efficiency of the taken inclined plane, we apply the formula: η = Ap / Az = m * g * h / Az.
Calculation: η = 50 * 10 * 1/700 = 500/700 = 0.714 or 71.4%.
Answer: The efficiency of the taken inclined plane is 71.4%.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.