Explains how pulleys work to lift heavy weights more easily. A fixed pulley changes the direction of force, allowing for easier lifting, while a movable pulley reduces the amount of force needed to ...

A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called ...

A Simple Machine addresses the challenge of combining workdays spent sitting behind a desk with the much-recognised need for movement to offset a sedentary lifestyle. The design from ...