Neco Model Questions Vol1 2017 Physics Question 12
Practice objective / multiple choice question 12 from the 2017 Neco Model Questions Vol1 Physics examination.
A \(20\ \text{kg}\) block is lifted vertically by a compound pulley system consisting of a fixed pulley and a movable pulley attached to the block. The rope is pulled with a constant force \(F\). The system operates with an overall efficiency of \(80\%\) due to friction. The block is raised through a height of \(2.0\ \text{m}\) in \(5.0\ \text{s}\). Assuming the ideal mechanical advantage of the compound pulley is 2, calculate the magnitude of the pulling force \(F\) (in newtons).
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About This Question
This is Neco Model Questions Vol1 2017 Physics Question 12. It is one of the objective questions from the 2017 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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