Catapults were either weighted or tension devices that could throw (toss) a heavy projectile into or over the castle walls. Large rocks were used to damage castle walls, and burning hay bales or similar objects could be tossed into the center portion to ignite buildings and straw-covered ground. Where available, containers of flammable pitch or oil could similarly be used, but with the threat that they could set fire to the catapult itself.
Catapults were for entering a fortified castle and the Vikings were raiders who moved fast and lightly. They wouldn't have built a catapult nor needed one. So, they were developed in the middle ages to attack at castle.
alligator/parhana moats, walls, towers, archers, etc.
Catapults were useed to throw things over castle walls to kill your enemy.
Catapults are useful to get an attack with more range.
Yes there was the would usually destroy a castle
turrets to have balistas or catapults etc:
fling rocks
Attackers would surround a castle with both men and catapults so that no one could enter or leave the castle.
No, you cannot castle if the rook is under attack.
No, you cannot castle if your rook is under attack.
Rune Castle Bartz
usually people of high royalty like kings to attack enemy castles