Waec Model Questions Vol1 2019 Agricultural Science Question 44
Practice objective / multiple choice question 44 from the 2019 Waec Model Questions Vol1 Agricultural Science examination.
A farmer uses a first‑class lever to lift a 200 kg sack of grain. The distance from the fulcrum to the sack (resistance arm) is 0.4 m and the distance to the effort arm is 1.2 m. The fulcrum is a wooden block with a coefficient of friction of 0.15 between the lever and the block. Assuming the effort is applied vertically downward and the weight of the lever itself is negligible, what is the minimum effort force (in newtons) the farmer must exert to lift the sack?
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About This Question
This is Waec Model Questions Vol1 2019 Agricultural Science Question 44. It is one of the objective questions from the 2019 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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