Gce Model Questions Vol1 2018 Physics Question 4
Practice objective / multiple choice question 4 from the 2018 Gce Model Questions Vol1 Physics examination.
A block of mass \(5\ \text{kg}\) is lifted by a compound pulley system. The system consists of a fixed pulley of radius \(0.15\ \text{m}\) and a movable pulley of radius \(0.10\ \text{m}\) attached to the block. A hand‑crank of radius \(0.20\ \text{m}\) is used to rotate the fixed pulley. The coefficient of kinetic friction between the rope and each pulley groove is \(\mu = 0.05\). Assuming the block is raised at constant speed, calculate the minimum constant torque that must be applied to the hand crank (in newton‑metres, to two significant figures).
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About This Question
This is Gce Model Questions Vol1 2018 Physics Question 4. It is one of the objective questions from the 2018 Gce Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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