What is accomplished by this simple pulley
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A simple pulley is used to change the direction of a force, reduce the amount of force needed to lift an object, or to increase the distance over which a force is applied.
A simple pulley is a basic machine that consists of a wheel with a groove, typically made of a wheel and a rope or a chain. It is used to lift or move heavy objects with less effort. By using a simple pulley, you can achieve a mechanical advantage, which means you can reduce the amount of force required to lift or move an object.
When you pull down on one end of the rope attached to the pulley, the object attached to the other end of the rope is lifted. The pulley allows you to change the direction of the force applied, making it easier to lift the object vertically or horizontally. By looping the rope over the pulley, you effectively distribute the force needed to lift the object, reducing the amount of effort required.
The mechanical advantage of a simple pulley can be calculated by determining the number of supporting ropes or segments of rope used. The more supporting ropes or segments, the higher the mechanical advantage, resulting in less force required to lift the object.
Overall, a simple pulley accomplishes the task of making it easier to lift or move heavy objects by providing a mechanical advantage and changing the direction of the applied force.