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 $



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