Calculate the maximum load a block and tackle system with 3 pulleys each, in the fixed block and movable block having an efficiency of 90% is used that could be overcome by a 1000N effort.
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Hello Mate!
Given,
No. of Pulleys (n) = 3
Efficiency (η) = 90%
Velocity Ratio (V.R) = n = 3
η = M.A/V.R
90/100 = M.A/3
270/100 = M.A
2.7 = M.A
Effort (E) = 1000 N
∴ M.A = Load/Effort
2.7 = Load/1000
2700 N = Load
The Load has to be 2700 N to overcome the effort.
I hope this helps.
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