The cutaway of the gun barrel shows a projectile moving through the barrel. If the project...

The cutaway of the gun barrel shows a projectile moving through the barrel. If the projectile’s exit speed is υs = 1675 m/s (relative to the barrel), the projectile’s mass is 18.5 kg, the length of the barrel is L = 4.4 m, the acceleration of the projectile down the gun barrel is constant, and θ is increasing at a constant rate of 0.18 rad/s, determine

(a) The acceleration of the projectile.

(b) The pressure force acting on the back of the projectile.

(c) The normal force on the gun barrel due to the projectile.

as the projectile leaves the gun, but while it is still in the barrel. Assume that the projectile exits the barrel when θ = 20°, and ignore friction between the projectile and the barrel.

Figure P3.58