Igcse Model Questions Vol1 2021 Physics Question 7
Practice objective / multiple choice question 7 from the 2021 Igcse Model Questions Vol1 Physics examination.
A block of mass \(12\ \text{kg}\) is lifted vertically a distance of \(0.50\ \text{m}\) using a block‑and‑tackle system that has three supporting rope segments (mechanical advantage \(=3\)). The input rope is pulled through a distance of \(2.00\ \text{m}\) and the measured input force is \(45\ \text{N}\). (a) Calculate the work done by the input force. (b) Calculate the increase in gravitational potential energy of the block. (c) Determine the efficiency of the system (percentage to one decimal place).
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About This Question
This is Igcse Model Questions Vol1 2021 Physics Question 7. It is one of the objective questions from the 2021 Igcse Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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