Laws Of Motion Question 267
Question: A gun of mass $ 10kg $ fires 4 bullets per second. The mass of each bullet is 20 g and the velocity of the bullet when it leaves the gun is $ 300m{{s}^{-1}}. $ The force required to hold the gun while firing is [EAMCET (Med.) 2000]
Options:
A) 6 N
B) 8 N
C) 24 N
D) 240 N
Show Answer
Answer:
Correct Answer: C
Solution:
Rate of change of momentum of the bullet in forward direction = Force required to hold the gun. $ F=nmv=4\times 20\times {{10}^{-3}}\times 300=24N $
