Laws Of Motion Question 186
Question: A machine gun is mounted on a 2000 kg car on a horizontal frictionless surface. At some instant the gun fires bullets of mass 10 gm with a velocity of 500 m/sec with respect to the car. The number of bullets fired per second is ten. The average thrust on the system is [CPMT 1971]
Options:
A) 550 N
B) 50 N
C) 250 N
D) 250 dyne
Show Answer
Answer:
Correct Answer: B
Solution:
u = velocity of bullet
Mass thrown per second by the machine gun= Mass of bullet × Number of bullet fired per second
