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7. A pulley system has a velocity ratio 3. Draw a diagram showing the point of application anddirection of load (L), effort (E) and tension (T).It lifts a load of 150 N by an effort of 60 N.Calculate its mechanical advantage. Is the pulleysystem ideal ? Give reason. |
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Answer» 2.5 and No Mark me Brainly pleaseExplanation: Given:L = 150N ; E = 60N ; V.R = 3To find the MECHANICAL Advantage use the formula M.A = LOAD / EFFORT = 150/60 = 2.5To KNOW if the machine is ideal, we have to know its efficiency which is calculated by the formula : M.A / V.R = 2.5/3=0.8 i.e the efficiency is = 80%Therefore we can CONCLUDE that machine is not ideal beacause the efficiency is not 100% |
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