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a pully was used for lifting heavy things

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13y ago

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1 pulley system more efficient then a 2 pulley system?

Efficiency is the proportion of energy usefully used. Using a pulley system does not use less energy it just changes the ammount of force. Pulleys do have a small ammount of friction so having just one pulley would be more efficient. (but not much more)


Did Archimedes perfect the lever and pulley?

maybe the pulley but not the lever he invented the pulley but not the lever


What is the history of the pulley?

the pulley was invented in ancient Sicily around 250 BC. The ancient Egyptian wooden four lobe pinion pulley was used to construct the Giza Pyramids around 2600 BC. This pulley surrounds its load and is unlike anything in the modern world. It operates with a mechanical advantage of 2.8 (MA=2.8) on the CLASS 2 lever principle. When hoisted the pulley with load rotates and climbs stepped structures with positive engagements of pulley lobes with steps. This is earliest machine known using "rack and pinion" mechanical technology. Google four lobe pinion pulley


How do Pulleys help?

Pulley used for change direction of the force, e.g. pull the weight up is change direction form pulling up to pulling down. Pulley arrangement can use to reduce the load require to lift object, e.g. fix rope to wall and put load hanging on pulley and pull 1 end so the wall support half of the load. See link for more detail.


How did the Egyptians use pulleys?

The Giza Pyramids were constructed using step-walking wooden four-lobe pinion-pulleys with a mechanical advantage of 2.8 (MA=2.8) This ancient pulley was unknown to the modern world until 27 August 2006. The design and operation of this pulley is nothing like any pulley known in the modern world. Google four lobe pinion pulley.

Related Questions

How do you use pulley for automobile?

pulley for what?


What type of pulley can you use to change the direction of the effort force?

Fixed Pulley and Compound Pulley.


How do you remove a pulley?

To remove a pulley, you typically need to use a pulley puller tool. First, release tension on the belt connected to the pulley. Then, follow the specific instructions for your vehicle or equipment to use the pulley puller to gently remove the pulley without damaging surrounding components.


Can you use belt and pulley in two wheelers?

It would depend on what you want to use the belt and pulley for


Does a pulley use friction?

No, a pulley does not use friction. Pulleys are simple machines that use a wheel and axle to redirect the force applied to them. Friction is not necessary for a pulley to work properly.


How do you remove the crank pulley on Mitsubishi 3.0 v-6?

remove all belts,tensioners etc, remove pulley bolt, use HARMONIC BALENCER PULLEY to remove - DO NOT USE NORMAL PULLEY REMOVER - must be pulled from center of pulley not from outer edge


What simple machine is used in venetian blinds?

The blinds use a pulley (fixed pulley).


Does a drawbridge use a pulley?

Yes it does.


Do you have to remove the air conditioner dryer to use the pulley on a 1996 deville?

No you don't have to remove the air conditioner dryer to use the pulley.........


What are some example sentences for 'pulley'?

A pulley is used to move a heavy weight. You can use a pulley to lift something that you can't lift alone.


How do you remove the power steering pulley on a 355 Chevy?

That requires the use of a power steering pulley PULLER. ( A special tool ) The pulley is pressed on.


What type of pulley extractor do you use to remove the pulley from the front of the timing belt cover?

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