Neco Model Questions Vol1 2017 Physics Question 3
Practice objective / multiple choice question 3 from the 2017 Neco Model Questions Vol1 Physics examination.
A pulley system lifts a load of \(200\ \text{N}\) through a vertical distance of \(2\ \text{m}\) in \(5\ \text{s}\). The effort applied to the rope is a constant force of \(80\ \text{N}\) acting over a distance of \(6\ \text{m}\). (a) Calculate the mechanical advantage, efficiency and power output of the pulley system. (b) An inclined plane of length \(5\ \text{m}\) raises the same load to the same height. A person pushes parallel to the plane with a constant force of \(100\ \text{N}\) over the full length in the same \(5\ \text{s}\). Which device is more efficient? State the efficiency of each device (to one decimal place) and identify the more efficient one.
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This is Neco Model Questions Vol1 2017 Physics Question 3. It is one of the objective questions from the 2017 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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