Neco 2022 Agricultural Science Question 32

Practice objective / multiple choice question 32 from the 2022 Neco Agricultural Science examination.

Neco 2022 Agricultural Science Objective / Multiple Choice Medium Difficulty
Question 32 NECO • 2022 • AGRICULTURAL_SCIENCE • objective

A simple class‑1 lever is used to lift a \(150\) kg sack of grain onto a platform \(0.8\) m high. The load is placed \(0.2\) m from the fulcrum. If the farmer can exert a maximum effort of \(600\) N, determine the minimum distance from the fulcrum at which the effort must be applied. Also state the work done by the farmer and compare it with the theoretical minimum work required to raise the sack.

Answer Options

A. Minimum effort arm ≈ 0.62 m; work done ≈ 1.45 kJ (greater than the theoretical minimum).
B. Minimum effort arm ≈ 0.25 m; work done ≈ 0.60 kJ (below the theoretical minimum).
C. Minimum effort arm ≈ 0.35 m; work done ≈ 0.88 kJ (exceeds the theoretical minimum).
Correct Answer D. Minimum effort arm ≈ 0.49 m; work done ≈ 1.18 kJ (matches the theoretical minimum).
Correct Answer
D
Correct Option:
Minimum effort arm ≈ 0.49 m; work done ≈ 1.18 kJ (matches the theoretical minimum).

About This Question

This is Neco 2022 Agricultural Science Question 32. It is one of the objective questions from the 2022 Neco Agricultural Science examination.

Difficulty level: Medium .

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