Q:

What is the difference between a fixed pulley and a movable pulley?

A:

Quick Answer

A fixed pulley consists of a wheel fixed to a shaft and is used in conjunction with a belt to transfer energy to another fixed pulley. A movable pulley consists of a shell, a movable wheel and a rope. Movable pulleys are also know as block and tackle.

Continue Reading

Full Answer

Experts choose flagpoles as applications of fixed pulleys, while movable pulleys are utilized in modern elevators and weight lifting machines. According to Education.com, movable pulleys have a greater mechanical advantage, meaning that the input force is less than the force of the system. Although, experts say that movable pulleys require more rope pulls by the user as the weight has become lighter, but fixed pulleys require less pulls. According to TeachEngineering, fixed pulleys enable the user to take advantage of gravity, balance an object and help raise objects above one's head. Movable pulleys are useful to raising objects below one's head. Education.com lists a third compound, the multiple pulley, which is comprised of both fixed and movable pulley systems. These pulleys are easiest to lift objects, as the mechanical advantage increases in tandem with the inclusion of more ropes, as cited by TeachEngineering. Pulleys are one form of simple machines in addition to screws and levers.

Learn more about Motion & Mechanics

Related Questions

  • Q:

    What are some types of simple machines?

    A:

    The six types of simple machines are the pulley, the lever, the wedge, the wheel and axle, the inclined plane and the screw. Simple machines are designed to make work easier.

    Full Answer >
    Filed Under:
  • Q:

    How do you replace a Toro drive belt?

    A:

    To replace a Toro drive belt, clean the mower, remove its deck, spark plug and blade, take out the belt guard and detach the belt from the shaft of the engine and the transmission pulley. Replace the drive belt, and reassemble the belt guard, blade, spark plug and deck. Refer to the owner's manual for model-specific instructions.

    Full Answer >
    Filed Under:
  • Q:

    How does a windmill function?

    A:

    Wind turns the blades, or vanes, of a windmill, which are connected to a shaft generating kinetic energy for a series of functions. Applications usually associated with windmills include electricity generation and groundwater access.

    Full Answer >
    Filed Under:
  • Q:

    What are special features of LG direct drive dishwashers?

    A:

    LG Direct Drive dishwashers eliminate the machine's belt and pulley to increase motor efficiency, decrease energy consumption, reduce noise level and prevent potential breakdowns. Other features include a 10-year warranty on Direct Drive motor parts, an increased capacity and a third-height adjustable rack.

    Full Answer >
    Filed Under:

Explore