General+phyisics+of+the+Axis+Powers

General Physics of the Axis Powers Infantry Weapons
All or most of the infantry guns used in World War Two have the same basic physics about them. Each gun has a recoil. This is when the gun is fired a force "kicks" the gun backwards. This deals with the conservation of momentum. Also, there are ways in which to try and reduce the recoil felt by the person. The gas assist is one way, pressure acts against the recoil off the gun reducing the amount of "kick" or recoil the operator feels. One special gun that was mention earlier was the stg 44. The curved barrel is not only a unique a ttachment but it also deals with a little more physics than some of the other guns. The velocity of the bullet needs to be slowed down so the bullet can make it around the curve and not go straight through the side of the barrel. This is done by holes in the barrel which slow the bullet down due to air resistance. Another force that acts on the bullet keeping it curving with the barrel is centripetal force. Centripetal force is the force that directs an object moving in a curved path towards the center of curvature, this keeps the bullet following the curved barrel. Another part of physics that can be applied to the guns used in World War Two is friction. When the gun is fired, there are many moving parts which create friction. Since these parts are moving so fast and so often, the friction creates a significant amount of heat. If the gun over heats, it can create mis-fires, or the gun could completely stop working properly. Steps that have been taken to reduce this heat are, holes in the barrels, air cooling systems or applying a lubricating substance to certain parts of the gun.