Neco 2021 Agricultural Science Question 3

Practice practical question 3 from the 2021 Neco Agricultural Science examination. This question covers Farm Tools .

Neco 2021 Agricultural Science Practical

Topic: Farm Tools

Question 3 NECO • 2021 • AGRICULTURAL_SCIENCE • practical

A farmer wants to compare the effectiveness of three hand tools – hand hoe, garden fork and spade – for breaking a compacted soil layer of 15 cm depth over a rectangular plot measuring 2 m by 3 m. The farmer records the time taken to loosen the soil completely with each tool as follows: hand hoe 12 minutes, garden fork 9 minutes, spade 7 minutes. The masses of the tools are: hand hoe 2.5 kg, garden fork 3.0 kg, spade 2.0 kg. The farmer applies a constant average force equal to twice the weight of the tool during each stroke, and each forward stroke covers a linear distance of 0.5 m across the full 2‑m width of the plot. Using these data, answer the questions that follow.

( a )

Calculate the average power output (in watts) of each tool during the operation.

( b )

Based on the calculated powers, recommend the most efficient tool and give a brief justification.

( c )

Mention two possible sources of error that could affect the recorded times.

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This is Neco 2021 Agricultural Science Question 3. It is one of the practical questions from the 2021 Neco Agricultural Science examination.

The question covers Farm Tools .

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