Gce Model Questions Vol1 2024 Physics Question 33

Practice objective / multiple choice question 33 from the 2024 Gce Model Questions Vol1 Physics examination.

Gce Model Questions Vol1 2024 Physics Objective / Multiple Choice Medium Difficulty
Question 33 GCE_MODEL_QUESTIONS_VOL1 • 2024 • PHYSICS • objective

A block of mass \(12\ \text{kg}\) is lifted vertically by a rope that passes over a frictionless pulley of radius \(0.20\ \text{m}\) attached directly to a motor. The motor supplies a constant electrical power of \(150\ \text{W}\) and the overall efficiency of the motor‑pulley system is \(75\%\). (a) Find the constant speed at which the block rises, and (b) the angular speed of the motor in \(\text{rad s}^{-1}\).

Answer Options

A. v ≈ 0.80 m/s; ω ≈ 4.0 rad/s
B. v ≈ 0.50 m/s; ω ≈ 2.5 rad/s
C. v ≈ 1.20 m/s; ω ≈ 6.0 rad/s
Correct Answer D. v ≈ 0.96 m/s; ω ≈ 4.8 rad/s
Correct Answer
D
Correct Option:
v ≈ 0.96 m/s; ω ≈ 4.8 rad/s

About This Question

This is Gce Model Questions Vol1 2024 Physics Question 33. It is one of the objective questions from the 2024 Gce Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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