Mechanical advantage of a movable pulley system can be determined in a number of?æways. The simplest?æ one?æ is by counting the number of rope segments?æ between the pulleys. If the free end is pointing downward do not?æ include. However, you must?æ include if it is pointing in the same direction?æ as to which the load will?æ be moved.?æ
use calculator
for one movable pulley you would get a mechanical advantage of 2
hanika
The kind of pulley has an ideal machanical advantage of 2 is called "Movable Pulley". From, Bryan Hollick
A fixed pulley is different from a movable pulley because a movable pulley has one end of the rope attached to it fixed on an unmoving object. The pulley is free to move with the rope. You pull the other end of the rope. Also, a movable pulley multiplies the applied force (effort force) and therefore has more mechanical advantage. A fixed pulley is attached to something that doesn't move, while one end of the rope is holding the weight, while the other is for pulling.A fixed pulley confers no mechanical advantage, but will convert motion in one direction into another direction.A movable pulley system, if the pulleys change their distance from each other, will confer a mechanical advantage.
because lifes hard
Using a movable pulley is known as using it to 'advantage'. The line going to the movable pulley contributes towards the force acting on the load. A line going to a fixed pulley, only serves to change the direction of the force.
I do believe it is equal to the number of ropes you have.
A single movable pulley gives you a 2:1 mechanical advantage. You can lift move 20 pounds with only 10 pounds of effort.
functions of movable pulley
With the string from the movable pulley
I think what you want is the "mechanical advantage". It's 2 .