The worker lifts a load weighing 300 N using a block system to a height of 1.5 m, performing a work of 500 J.
| December 29, 2020 | education
The worker lifts a load weighing 300 N using a block system to a height of 1.5 m, performing a work of 500 J. What is the efficiency of the blocks?
The efficiency of the blocks is equal to the ratio of useful work to spent. In this case, the useful work will be lifting to a certain height. Therefore, Ap = m * g * h = P * h = 450J.
Efficiency = 450/500 = 0.9
Also, as a percentage, the efficiency is 90%
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.
