2022年1月18日 · A pulley works by changing the direction of the applied force that is manifested at the object. The wheel rotates about its axle when the rope is pulled from one end and the …

A pulley is a wheel on an axle or shaft enabling a taut cable or belt passing over the wheel to move and change direction, or transfer power between itself and a shaft. A sheave or pulley wheel is a pulley using an axle supported by a frame or shell (block) to guide a cable or exert force.

What is a Pulley? A pulley is a wheel that carries a flexible rope, cord, cable, chain, or belt on its rim. Pulleys are used individually or in combination to transmit power and motion. Pulleys with grooved edges are called sheaves.

2024年12月17日 · A pulley is a wheel that carries a flexible rope, cord, cable, chain, or belt on its rim. Pulleys are used singly or in combination to transmit energy and motion. Pulleys with grooved rims are called sheaves.

Pulley is a simple wooden or metallic machine that uses a wheel and rope to lift heavy loads. Explore more about types and formula of the pulley at BYJU'S.

What is a Pulley? A pulley is a wheel that carries a flexible rope, cord, cable, chain, or belt on its rim. Pulleys are used individually or in combination to transmit power and motion. Pulleys with grooved edges are called sheaves.

2022年7月25日 · What is a Pulley? A-Pulley is a simple mechanical device that we encounter in our daily life and is used for transmitting power. A pulley consists of a wheel that is mounted on an axle or a shaft, this wheel can be driven by a chain, belt, rope, etc.

pulley, in mechanics, a wheel that carries a flexible rope, cord, cable, chain, or belt on its rim. Pulleys are used singly or in combination to transmit energy and motion. Pulleys with grooved rims are called sheaves.

In Roman Egypt, the Hero of Alexandria identified the winch as one of six simple machines used to lift weights. The pulleys are assembled to form a block and handle it in order to provide a mechanical advantage for applying large forces.

The pulley reduces the force given to do work. When using a pulley system, the direction of force required to lift an object is changed from pushing down to pulling down. Pulley manufacturers aim to make heavy work more manageable and are classified as movable, stationary, or combined.