Neco Model Questions Vol1 2021 Agricultural Science Question 23

Practice objective / multiple choice question 23 from the 2021 Neco Model Questions Vol1 Agricultural Science examination.

Neco Model Questions Vol1 2021 Agricultural Science Objective / Multiple Choice Medium Difficulty
Question 23 NECO_MODEL_QUESTIONS_VOL1 • 2021 • AGRICULTURAL_SCIENCE • objective
Neco Model Questions Vol1 2021 Agricultural Science Question 23 diagram

The diagram shows a tractor pulling a plough via a drawbar that is 2 m long. The plough has a working width of 0.9 m and each metre of width requires a soil resistance of 150 N. The tractor weighs 1500 kg and the coefficient of rolling resistance of its wheels is 0.02. The tractor can deliver a pulling force of 12 kN at the drawbar. Ignoring aerodynamic drag, determine the minimum pulling force required to overcome both soil resistance and rolling resistance, and state whether the tractor's available force is sufficient.

Answer Options

Correct Answer A. The minimum required pulling force is about 430 N; the tractor's available 12 kN is sufficient.
B. The minimum required pulling force is about 5 800 N; the tractor's available 12 kN is sufficient.
C. The minimum required pulling force is about 430 N; the tractor's available 12 kN is insufficient.
D. The minimum required pulling force is about 1 200 N; the tractor's available 12 kN is sufficient.
Correct Answer
A
Correct Option:
The minimum required pulling force is about 430 N; the tractor's available 12 kN is sufficient.

About This Question

This is Neco Model Questions Vol1 2021 Agricultural Science Question 23. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Agricultural Science examination.

Difficulty level: Medium .

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