Gce Model Questions Vol1 2023 Physics Question 3

Practice objective / multiple choice question 3 from the 2023 Gce Model Questions Vol1 Physics examination.

Gce Model Questions Vol1 2023 Physics Objective / Multiple Choice Medium Difficulty
Question 3 GCE_MODEL_QUESTIONS_VOL1 • 2023 • PHYSICS • objective

A 5.0 kg block is lifted at constant speed by a rope that passes over a movable pulley attached to the ceiling. The ideal mechanical advantage of the system is 2. Because of friction in the pulley axle, the tension in the rope on the load side is 10 % greater than the tension on the effort side. Determine (a) the magnitude of the input force required to lift the block, and (b) the overall efficiency of the system, expressed as a percentage.

Answer Options

A. Input force ≈ 44.5 N; efficiency ≈ 45 %
B. Input force ≈ 49.0 N; efficiency ≈ 60 %
C. Input force ≈ 40.0 N; efficiency ≈ 50 %
Correct Answer D. Input force ≈ 44.5 N; efficiency ≈ 55 %
Correct Answer
D
Correct Option:
Input force ≈ 44.5 N; efficiency ≈ 55 %

About This Question

This is Gce Model Questions Vol1 2023 Physics Question 3. It is one of the objective questions from the 2023 Gce Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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