Neco 2025 Agricultural Science Question 3

Practice essay / theory question 3 from the 2025 Neco Agricultural Science examination. This question covers Farm Tools .

Neco 2025 Agricultural Science Essay / Theory

Topic: Farm Tools

Question 3 NECO • 2025 • AGRICULTURAL_SCIENCE • essay

Neco 2025 Agricultural Science Question 3 diagram

The diagram shows a practical setup for using a hand hoe to loosen soil in a rectangular garden plot. The hoe blade is 30 cm long and is inserted into the soil at an angle of 45° to the horizontal. The farmer applies a constant force of 150 N along the 1.2‑m long handle. The soil offers a resistance of 80 N opposite to the direction of motion. The farmer makes 20 strokes, each moving the blade through a vertical distance equal to the blade length projected onto the vertical direction.

Question Parts

( a )

Calculate the total work done by the farmer in joules after the 20 strokes.

( b )

State two advantages of using a hand hoe rather than a spade for preparing a garden bed, considering ergonomics and soil disturbance.

( c )

If the farmer wishes to increase the total work output by 50 % without changing the applied force, suggest one modification to the setup and justify how it achieves the increase.

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About This Question

This is Neco 2025 Agricultural Science Question 3. It is one of the essay questions from the 2025 Neco Agricultural Science examination.

The question covers Farm Tools .

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