Gce Model Questions Vol1 2021 Agricultural Science Question 13

Practice objective / multiple choice question 13 from the 2021 Gce Model Questions Vol1 Agricultural Science examination.

Gce Model Questions Vol1 2021 Agricultural Science Objective / Multiple Choice Medium Difficulty
Question 13 GCE_MODEL_QUESTIONS_VOL1 • 2021 • AGRICULTURAL_SCIENCE • objective

A farmer uses a hand lever to lift a sack of grain weighing 150 kg. The lever is 2.0 m long and the pivot is placed 0.4 m from the sack end. The farmer applies the effort at the opposite end. The lever operates with an efficiency of 85 %. (i) Determine the minimum effort force the farmer must apply. (ii) If the farmer can exert at most 250 N, what is the greatest mass of grain that can be lifted with this lever under the same efficiency?

Answer Options

A. Minimum effort ≈375 N; maximum liftable mass ≈95 kg
B. Minimum effort ≈410 N; maximum liftable mass ≈70 kg
Correct Answer C. Minimum effort ≈433 N; maximum liftable mass ≈87 kg
D. Minimum effort ≈500 N; maximum liftable mass ≈80 kg
Correct Answer
C
Correct Option:
Minimum effort ≈433 N; maximum liftable mass ≈87 kg

About This Question

This is Gce Model Questions Vol1 2021 Agricultural Science Question 13. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Agricultural Science examination.

Difficulty level: Medium .

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