Obscured by digital innovations, it’s easy to overlook the mighty pulley. Evidence of its use can be found as far back as Ancient Egypt’s Twelfth Dynasty; later, pulleys were employed in essential ...

Introduction Before the industrial age people largely had to rely on muscle power to move and lift heavy objects. Simple machines such as pulleys, levers and ramps made it easier for humans to lift ...

In the world of rope rescue, we use mechanical advantage systems really for two reasons. The first being a force increasing tool and the second, a means of reducing the weight of a load during a ...