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. Calculate the velocity ratio.
A
5
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B
4
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C
8
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D
6
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Solution
The correct option is B 5 Given: Number of pulleys (n) = 5
Effort = 1000N
Load= 4500N
Solution: As according to the question, the number of pulleys the block and tackle system have is 5.