Gce Model Questions Vol1 2020 Agricultural Science Question 44
Practice objective / multiple choice question 44 from the 2020 Gce Model Questions Vol1 Agricultural Science examination.
A farmer uses a first‑class lever to lift a \(200\ \text{kg}\) sack of grain onto a platform \(1.5\ \text{m}\) high. The effort arm of the lever is \(0.75\ \text{m}\) long and the load arm is \(0.25\ \text{m}\) long. The farmer applies the effort force at an angle of \(30^{\circ}\) below the horizontal. Assuming the farmer applies a constant force over the required distance, determine (a) the magnitude of the effort force, (b) the work done by the farmer, (c) the theoretical work required to raise the sack (ignoring friction), and (d) the efficiency of the lever system (output work ÷ input work, expressed as a percentage).
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About This Question
This is Gce Model Questions Vol1 2020 Agricultural Science Question 44. It is one of the objective questions from the 2020 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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