Neco 2020 Agricultural Science Question 8
Practice objective / multiple choice question 8 from the 2020 Neco Agricultural Science examination.
A hand hoe has a handle length of \(1.2\ \text{m}\) and the distance from the pivot (where the blade meets the handle) to the cutting edge is \(0.15\ \text{m}\). To lift a soil clod weighing \(12\ \text{N}\), the farmer applies a force perpendicular to the handle at its end. (a) Calculate the minimum force the farmer must exert. (b) To reduce this effort by 30\% , the farmer plans to extend the handle by adding a brace, increasing the effort arm length while keeping the load arm unchanged. Determine the required effort‑arm length (in metres, to two decimal places) that will achieve exactly a 30\% reduction, and state the new required force.
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About This Question
This is Neco 2020 Agricultural Science Question 8. It is one of the objective questions from the 2020 Neco Agricultural Science examination.
Difficulty level: Medium .
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