Multiple Movable Pulley

Q.

The given figure shows an arrangement of moving pulleys.

If the effort applied at the free end of the string is E; what is the mechanical advantage of the system of pulleys?

1. 2

2. 4

3. 6

4. 8

Q. The given figure shows a block and tackle system of pulleys used to lift a load.
What is the mechanical advantage of the system?

1. 5
2. 4
3. 2
4. 3