How do pulleys make lifting heavy objects easier - JSS2 Basic technology Power and Machines Question

Pulleys are wheels with grooves that hold ropes or cables, allowing them to change the direction of an applied force. When used in a system, pulleys can also multiply the force, making it easier to lift heavy objects. For example, a single fixed pulley changes the direction of the force, while a block and tackle system (a combination of fixed and movable pulleys) can significantly reduce the effort needed to lift a load. Pulleys are used in various applications, such as lifting equipment in construction and drawing water from wells. They enhance mechanical advantage by distributing the load across multiple ropes or cables.