Physics
What is the ideal mechanical advantage of a single fixed pulley? Can it be used as a force multiplier?
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.
- The weight of the rope should be equal to the weight of the pulleys.
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.
What is the velocity ratio of a single fixed pulley?
In a single fixed pulley, if the effort moves by a distance x downwards, by what height is the load raised upwards?