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NTA Abhyas JEE Main2020PhysicsCenter of Mass, Momentum and CollisionPractice

A machine gun has a mass of 5 kg . It fires 50 g bullets at the rate of 30 bullets per minute at a speed of 400 m s - 1 . The magnitude of force required to keep the gun in position (in N ) is

Correct answer

10

Step-by-step solution

F o r c e r e q u i r e d = c h a n g e i n m o m e n t u m t i m e t a k e n = ( 50 × 10 − 3 × 30 ) ×( 400 − 0) 60 = 10 N

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