Waec Model Questions Vol1 2021 Physics Question 15

Practice objective / multiple choice question 15 from the 2021 Waec Model Questions Vol1 Physics examination.

Waec Model Questions Vol1 2021 Physics Objective / Multiple Choice Medium Difficulty
Question 15 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • PHYSICS • objective

A block‑and‑tackle system is used to lift a load of 500 N. The effort applied is 150 N. While the load is raised by 0.30 m, the point of application of the effort moves through 0.90 m. Determine (a) the ideal mechanical advantage (IMA), (b) the actual mechanical advantage (AMA), and (c) the efficiency of the system as a percentage.

Answer Options

A. IMA = 3.00, AMA = 3.33, efficiency = 90%
B. IMA = 3.33, AMA = 2.78, efficiency = 84%
C. IMA = 3.33, AMA = 3.00, efficiency = 80%
Correct Answer D. IMA = 3.33, AMA = 3.00, efficiency = 90%
Correct Answer
D
Correct Option:
IMA = 3.33, AMA = 3.00, efficiency = 90%

About This Question

This is Waec Model Questions Vol1 2021 Physics Question 15. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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