A pulley system is a simple machine that consists of a grooved wheel and a rope or cable. It is used to change the direction or magnitude of a force.
Imagine you are trying to lift a heavy box onto a shelf, but it's too heavy for you to lift directly. Using a pulley system is like having someone else help you by pulling on the other end of the rope, making it easier for you to lift the box.
Mechanical Advantage: The mechanical advantage of a pulley system refers to how much it multiplies the input force.
Fixed Pulley: A fixed pulley is attached to an immovable object and only changes the direction of the force.
Movable Pulley: A movable pulley is attached to the object being lifted and moves along with it, reducing the effort needed.
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