Final answer:
A loaded rifle or pistol cartridge has four main components: the case, bullet, powder, and primer. In military rifles, a recoil mechanism reduces the force felt by the shooter, which involves understanding the physics of recoil velocity and the average force exerted by the recoil mechanism.
Step-by-step explanation:
Parts of a Rifle or Pistol Cartridge
The parts of a loaded rifle or pistol cartridge consist of the following components:
- Case - The container that holds all the other parts of the cartridge together.
- Bullet - The projectile that is expelled from the firearm's barrel upon firing.
- Powder - A propellant substance, usually gunpowder, that combusts to create gas and pressure to propel the bullet forward.
- Primer - A small amount of impact-sensitive chemical that, when struck by the firing pin, ignites the powder.
Recoil Mechanism in Military Rifles
Military rifles have mechanisms to reduce the recoil forces experienced when firing. Part (a) involves calculating the recoil velocity of a plunger after firing a bullet, which can be determined using the law of conservation of momentum. In part (b), the average force exerted by this recoil mechanism can be found using the work-energy principle, considering the distance over which the internal part (plunger) is stopped. Lastly, part (c) requires comparing this force with the force exerted on the gun when the bullet is accelerated over a specified time duration.
Note: The question requires precise calculations using given parameters. Ensure you understand physics concepts like momentum conservation and force computation to correctly solve the problem.