Physics
For a system of n pulleys, the weight of the lower block along with pulleys is w, then its efficiency is given by: 1. 2. 3. 4.
Related Questions
How many strands are supporting the load in case of block and tackle system of 5 pulleys? Â
- 4
- 5
- 6
- 7
How many strands are supporting the load in case of block and tackle system of 4 pulleys when effort is in downward direction?
- 5
- 4
- 3
- 6
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 ideal mechanical advantage of a single fixed pulley? Can it be used as a force multiplier?