Physics
What is the ideal mechanical advantage of a single fixed pulley? Can it be used as a force multiplier?
Machines
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Answer
In case of an ideal single fixed pulley the effort needed is equal to the load itself and so the mechanical advantage is equal to 1.
As the amount of effort required is equal to the load itself so a single fixed pulley cannot be used as a force multiplier.
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Related Questions
For greater efficiency of block and tackle pulley system:
- The lower block should be of negligible weight.
- The upper block should be of negligible weight.
- The number of pulleys should be minimum.
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Assertion (A): The mechanical advantage of class III levers is always less than 1.
Reason (R): This is because the effort arm is always greater than the load arm.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true and R is not the correct explanation of A.
- assertion is false but reason is true.
- assertion is true but reason is false.
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