Neco Model Questions Vol1 2019 Physics Question 11
Practice objective / multiple choice question 11 from the 2019 Neco Model Questions Vol1 Physics examination.
A block and tackle system consists of one fixed pulley and one movable pulley, giving a mechanical advantage of 2. The system operates with an overall efficiency of 80 %. A load of 500 N is lifted at constant speed. (i) Calculate the magnitude of the input force required to lift the load. (ii) If a second block and tackle arrangement with a mechanical advantage of 3 and the same efficiency is used to lift the same load, by what percentage is the required input force reduced compared with the first arrangement? Give your answer to one decimal place.
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About This Question
This is Neco Model Questions Vol1 2019 Physics Question 11. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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