What is a pulley?

A pulley is a simple machine that uses a grooved wheel and a rope or cable to lift loads. It's a fundamental concept in physics and engineering.

• Definition: A <a href="https://www.wikiwhat.page/kavramlar/Pulley">Pulley</a> is essentially a wheel on an axle that is designed to support movement of a cable or belt along its circumference.

• Types: There are several types of pulleys, including:

  • Fixed Pulleys: A <a href="https://www.wikiwhat.page/kavramlar/Fixed%20Pulley">Fixed Pulley</a> changes the direction of the force but does not provide a mechanical advantage.
  • Movable Pulleys: A <a href="https://www.wikiwhat.page/kavramlar/Movable%20Pulley">Movable Pulley</a> provides a mechanical advantage, reducing the force needed to lift a load, but increases the distance the rope must be pulled.
  • Compound Pulleys: A <a href="https://www.wikiwhat.page/kavramlar/Compound%20Pulley">Compound Pulley</a> system combines fixed and movable pulleys for increased mechanical advantage.

• Mechanical Advantage: The <a href="https://www.wikiwhat.page/kavramlar/Mechanical%20Advantage">Mechanical Advantage</a> of a pulley system is the ratio of the output force (the load) to the input force (the effort). It determines how much easier the pulley makes lifting the load.

• Applications: Pulleys are used in a wide range of applications, including:

  • Construction: Cranes, elevators.
  • Transportation: Elevators.
  • Everyday life: Window blinds, flagpoles.