Neco 2022 Physics Question 7

Practice objective / multiple choice question 7 from the 2022 Neco Physics examination.

Neco 2022 Physics Objective / Multiple Choice Medium Difficulty
Question 7 NECO • 2022 • PHYSICS • objective

A compound pulley system is used to lift a load of mass \(200\ \text{kg}\). The arrangement gives a mechanical advantage of \(3\) and the overall efficiency is \(85\%\).\n\n(i) Determine the minimum force that the operator must apply to raise the load at constant speed.\n\n(ii) If the load is raised a vertical distance of \(5\ \text{m}\) in \(10\ \text{s}\), find the average power delivered by the operator.

Answer Options

Correct Answer A. Force ≈ 7.69×10^2 N; Power ≈ 1.15×10^3 W
B. Force ≈ 7.00×10^2 N; Power ≈ 1.00×10^3 W
C. Force ≈ 6.53×10^2 N; Power ≈ 9.80×10^2 W
D. Force ≈ 8.00×10^2 N; Power ≈ 1.20×10^3 W
Correct Answer
A
Correct Option:
Force ≈ 7.69×10^2 N; Power ≈ 1.15×10^3 W

About This Question

This is Neco 2022 Physics Question 7. It is one of the objective questions from the 2022 Neco Physics examination.

Difficulty level: Medium .

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