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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
What else can I help you with?
Did the Egyptians invent the first pulley?
yes they did they did i have a history degree. Sorry but the first pulley was not invented by the Egyptians it was invented by Archimedes of Syracuse in around 250 BCE.
Did Archimedes perfect the lever and pulley?
maybe the pulley but not the lever he invented the pulley but not the lever
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)
Is a tape measure a pulley?
Yes
Is a pulley an ancient greek invention?
yes , yes it is
Did the Egyptians invent the first pulley?
yes they did they did i have a history degree. Sorry but the first pulley was not invented by the Egyptians it was invented by Archimedes of Syracuse in around 250 BCE.
When were the first roller bearings used in pulley blocks?
The roller bearing dates to at least 40 BC, and it was applied to pulley blocks sometime in the dim past of history. There is probably no way to know when someone first put a roller bearing into a pulley block.
What are some early history simple machines?
pulley gear inclined plane wedge lever screw
What is the name of the pulley on a 1997 dodge stratus 2.5 V6?
There is a crankshaft pulley, alternator pulley, power steering pump pulley, AC pulley, idler pulley, tensioner pulley, etc.
What is a compound pulley?
a coumpound pulley is when there is a fixe pulley and movable pulley working together
What is compound pulley?
a coumpound pulley is when there is a fixe pulley and movable pulley working together
Which simple machine can help us to move a sail on a sailboat?
pulley
What causes a pulley to wobble?
Things that might cause a pulley to wobble: The pulley is bent. The shaft the pulley is on is bent. The pulley is mounted crooked.
What is the velocity ration of a pulley?
The velocity ratio of a pulley system is the ratio of the rotational speed of the driving pulley to the driven pulley. It indicates how the speed of the driven pulley relates to the speed of the driving pulley. The formula is: Velocity Ratio = Diameter of driving pulley / Diameter of driven pulley.
Is a faucet handle considered a pulley?
No, it is not a pulley. A pulley has to half effort.
What is the function of pulley?
Pulley reduces the force given to get the work done. There are amny types of pulleys. Examples are fixed pulley, movable pulley and Combined pulley.
How do you remove a pulley with out a pulley puller?
If you pry up on the pulley with a bar on each side of it and while keeping pressure on the pulley, hit the end of the shaft that the pulley is on with a brass mallet, the pulley will usually break free.
