Waec Model Questions Vol1 2024 Agricultural Science Question 18
Practice objective / multiple choice question 18 from the 2024 Waec Model Questions Vol1 Agricultural Science examination.
A farmer needs to lift a 150 kg sack of grain from ground level to a height of 0.5 m. He can use either (a) a class‑1 lever with an effort arm of 0.6 m and a load arm of 0.20 m, or (b) a block‑and‑tackle system that provides an ideal mechanical advantage of 4. (i) For each device, calculate the effort force required to lift the sack (use g = 9.8 m s⁻²). (ii) For each device, determine the distance the farmer's hand must move to achieve the 0.5 m lift. (iii) Which device requires the smaller effort, and what are the corresponding effort force and hand‑movement distance? Give answers to two decimal places.
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About This Question
This is Waec Model Questions Vol1 2024 Agricultural Science Question 18. It is one of the objective questions from the 2024 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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