Igcse Model Questions Vol1 2025 Physics Question 15

Practice objective / multiple choice question 15 from the 2025 Igcse Model Questions Vol1 Physics examination.

Igcse Model Questions Vol1 2025 Physics Objective / Multiple Choice Medium Difficulty
Question 15 IGCSE_MODEL_QUESTIONS_VOL1 • 2025 • PHYSICS • objective

A motor drives gear A (diameter 200 mm) at 1500 rpm. Gear A meshes with gear B (diameter 400 mm) which is fixed on the same shaft as gear C (diameter 150 mm). Gear C meshes with gear D (diameter 300 mm) that is attached to a pulley of radius 0.25 m driving a conveyor belt. The overall mechanical efficiency of the gear train is 85 %. (a) Find the angular speed of the pulley in rad s⁻¹. (b) Determine the power delivered to the conveyor belt if the motor supplies 2.0 kW of mechanical power.

Answer Options

A. ω = 78.5 rad s⁻¹; Power = 1.70 kW
B. ω = 39.3 rad s⁻¹; Power = 2.00 kW
Correct Answer C. ω = 39.3 rad s⁻¹; Power = 1.70 kW
D. ω = 26.2 rad s⁻¹; Power = 1.45 kW
Correct Answer
C
Correct Option:
ω = 39.3 rad s⁻¹; Power = 1.70 kW

About This Question

This is Igcse Model Questions Vol1 2025 Physics Question 15. It is one of the objective questions from the 2025 Igcse Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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