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A portcullis is a heavy gate made of wood or metal that is raised or lowered vertically to block entry to a castle or fortification. It is typically operated using a system of pulleys, ropes, or chains. The portcullis can be controlled from inside the castle to allow or restrict access through the entrance.
What else can I help you with?
What name is given to the strong heavy grating?
The name given to the strong heavy grating is a "manhole cover." It is a removable plate that is used to cover openings in streets or pavements to provide access to utility vaults below.
What are the types of mechanical work?
The types of mechanical work include static work, dynamic work, and intensive work. Static work refers to work done without motion, dynamic work involves movement, and intensive work focuses on the internal energy changes within a system.
How does input work and out put work affect the efficiency of a simple machine?
Input work is the work done on a machine, while output work is the work done by the machine. Efficiency of a simple machine is calculated as the ratio of output work to input work. The efficiency of a simple machine is high when the output work is close to the input work, indicating that the machine is converting most of the input work into useful output work.
What formula relates work and power?
The formula that relates work and power is: Power = Work / Time. Power is the rate at which work is done, which is the amount of work done divided by the time it takes to do that work.
The work that the simple machine does is called the work?
the work a machine does is the work output what it takes to do the work is the work input
Can you give me a sentence for portcullis?
A portcullis is a heavy metal grate used as a gate. The guards raised the portcullis of the castle.
How many floors are in portcullis house?
Portcullis House (PCH) is an office building in Westminster, London, UK. Portcullis House is a seven story building. The building was designed by Michael Hopkins and Partners.
What is A sentence with portcullis?
When attackers attacked the castle, if a portcullis existed , it could come from above and kill them. I hope it helped :) ^^
What was the part of a castle?
Keep, portcullis?
What is the root word of portcullis?
The root word of "portcullis" is "porta," which means gate or entrance in Latin.
What does the Portcullis coat of arms stand for?
protection
What was the strong entrance gate to a castle called?
The portcullis.
Is there a portcullis at the Tower of London?
yes there is but i think that there were 2.
What were the booby traps in the pyramids?
they had portcullis and dead ends
What are the advantages of a portcullis?
You can close the gate on the enemies when they come to attack the castle. And if they get under it when it's closing, they are crushed and due to the pointy gate, they die! Portcullis are very helpful.
What did the building used to be where Portcullis House currently is?
The Portcullis House was called the Palace of Westminster initially that comprised of committee rooms, refreshment facilities, and housing member office.
What is a porcullis in medeival times?
A portcullis was a large gate, usually in a frame that allowed it to be raised or lowered depending on was there. If you think of any medieval movie where a gate was raised or lowered, that was a portcullis.
