A block and tackle system has 5 pulleys. If an effort of 1000N is needed in the downward direction to raise a load of 4500N. What is the mechanical advantage ?
A
4.5
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B
2
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C
3.5
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D
5
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Solution
The correct option is A4.5 Effort (E)=1000N Load (L)=4500N
So from the definition of mechanical advantage (MA) =LE = 45001000 = 4.5