A ram is a big tool. 

A ram is a very big tool. 
Sometimes, the log is inside a roof on wheels. This roof protects the people. It can stop fire and arrows. 
The log hits the wall with great force. This makes the stone crack. The cracks grow bigger and bigger.
Soon, a hole appears in the wall. This lets people walk through the gap.
Today, police use small rams. They use them to open locked doors.
A battering ram is a tool used to break walls or gates. 

How does it work? Stone and brick walls are weak when hit hard. The heavy log hits the wall over and over. This makes the stone crack. The cracks grow until a hole appears. This gap lets attackers enter the building.
Defenders tried to stop the rams. They dropped heavy things on them. They also used fire to try and burn them. Eventually, big cannons replaced these tools. Cannons used gunpowder to shoot heavy balls. Today, police use small metal rams. They use them to force open locked doors. 
A battering ram is a tool used to break through strong walls or gates. 

These newer rams worked in a very specific way. A large log was hung from ropes or chains inside a wooden frame. This frame often had wheels so it could move easily. To protect the workers, the frame had a roof called a canopy. This canopy was often covered in wet animal hides to stop fire. It also kept arrows and javelins from hitting the people inside.
History shows us that these tools have been used for a very long time. The earliest drawings of a possible ram come from an Egyptian tomb. This tomb belonged to a noble named Khety from the 11th Dynasty. In the ancient Middle East, rams became much more advanced. A man named Ceras from Carthage is said to have built a ram with wheels. He called his machine a testudo, which is the Latin word for tortoise. 
There are many important dates and places in the history of the ram. The first confirmed use in the West was between 503 and 502 BC. This happened when a Roman leader named Opiter Verginius fought the Aurunci people. Another famous use was in 427 BC during a siege in Plataea. In 409 BC, rams were used on the island of Sicily during the siege of Selinus. 
Even though they are very old, battering rams are still used today. You will not see huge wooden logs on wheels anymore, though. Instead, police officers use small metal versions to open locked doors. These are sometimes called enforcers. Some modern rams even use a piston driven by compressed air. This helps the metal head hit the door with even more power. 
A battering ram is a specialized siege engine designed to breach fortifications. Its primary purpose is to break open heavy wooden gates or shatter masonry walls. 
The mechanics of a battering ram depend on how force is applied to a target. In its simplest form, a large log is carried by people and swung against an obstacle. However, more advanced versions use a more controlled system. A heavy log is suspended by ropes or chains inside a mobile wooden frame. 
Engineers developed different types of rams to suit various combat needs. Some machines were massive, wheeled structures designed for heavy destruction. Others were much lighter, built using saplings lashed together to create a frame.
The history of the battering ram spans thousands of years. The earliest possible depiction is found in the Egyptian tomb of a noble named Khety from the 11th Dynasty. 
Battering rams played a significant role in many major historical events. They were used during the destruction of Jerusalem by the Romans and throughout the Crusades. 
Defenders used many clever tactics to stop a ram from working. They might drop large sacks of sawdust in front of the ram to cushion the blow. 
While the massive wooden engines of the past are gone, the concept survives in modern technology. Law enforcement and military personnel still use smaller, hand-held versions to breach locked doors. 
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