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ICSE Class 10 Physics 2018 Paper

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Question : 44 of 78
Marks: +1, -0
The pulley system drawn lifts a load of 150 N150\,\mathrm{N} when an effort of 60 N60\,\mathrm{N} is applied. Find its mechanical advantages.
Solution:  
  Here load  (L)  =150 N\;\text{Here load}\;(L)\;=150\,\mathrm{N}
  effort  (E)  =60 N\;\text{effort}\;(E)\;=60\,\mathrm{N}
∴  Mechanical advantage    =    load  (L)  effort  (E)\therefore\;\text{Mechanical advantage}\;\;=\;\frac{\;\text{load}\;(L)}{\;\text{effort}\;(E)}
  =  150 N60 N=2.5\;=\;\frac{150\,\mathrm{N}}{60\,\mathrm{N}}=2.5
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