Neco Model Questions Vol1 2021 Physics Question 22

Practice objective / multiple choice question 22 from the 2021 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2021 Physics Objective / Multiple Choice Medium Difficulty
Question 22 NECO_MODEL_QUESTIONS_VOL1 • 2021 • PHYSICS • objective

A block of mass 20 kg is lifted vertically by a rope that passes over a fixed solid‑cylinder pulley of radius 0.15 m and mass 2 kg. The axle of the pulley has a constant friction torque of 0.5 N·m. The rope is attached to a motor that exerts a constant tension \(T\) on the rope. The block starts from rest and reaches a speed of 2.0 m s⁻¹ in 4.0 s. Assuming the rope does not slip, determine the minimum tension \(T\) that the motor must supply.

Answer Options

A. Approximately 1.5×10² N (≈150 N).
B. Approximately 2.5×10² N (≈250 N).
C. Approximately 1.8×10² N (≈180 N).
Correct Answer D. Approximately 2.0×10² N (≈199.8 N).
Correct Answer
D
Correct Option:
Approximately 2.0×10² N (≈199.8 N).

About This Question

This is Neco Model Questions Vol1 2021 Physics Question 22. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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