Not exactly a drop in proposition. You need the services of a gunsmith.
100-400 USD or so
The difference is 360. Find it out by doing 400-40=360
The net force on the falling barrel is the difference between its weight (1000 N) and the air drag (400 N), so the net force is 600 N downward. This net force causes the barrel to accelerate downwards according to Newton's second law (F=ma).
8755 - 8355 = 400 8355 - 8755 = -400
size of the motor
The amount of salt in a barrel can vary depending on the size of the barrel and the type of salt. On average, a standard 55-gallon barrel could hold between 300-400 pounds of salt.
100-400 or so
400 has a longer stroke
The difference between them is 3,600 meters.4 km is ten times as long as 400 m.
1700 feet
0.4 litre = 400 milliliters