Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Physics
Chapter
Center of Mass, Momentum and Collision

NTA Abhyas 2020 · Physics · Center of Mass, Momentum and Collision

A machine gun has a mass of 5kg . It fires 50g bullets at the rate...

A machine gun has a mass of 5kg5kg. It fires 50g50g bullets at the rate of 3030 bullets per minute at a speed of 400ms−1400m{s}^{- 1}. The magnitude of force required to keep the gun in position (in NN) is

Correct answer

10

Step-by-step solution

Forcerequired = \dfrac{changeinmomentum}{timetaken}<br/><br/><br /><br />= \dfrac{( 50 \times {10}^{- 3} \times 30 ) \times ( 400 - 0)}{60} = 10N
Practice Center of Mass, Momentum and Collision on Quantrex Academy →

More from Center of Mass, Momentum and Collision

Two identical bodies A and B of equal masses have initial velocities v_1 = 4 i m/s and… JEE Main 2026The position of center of mass of three masses 2 kg, 3 kg and 15 kg placed with respect… JEE Main 2026Two blocks of masses 2 kg and 1 kg respectively, are tied to the ends of a string which… JEE Main 2026The position of an object having mass 0.1 kg as a function of time t is given as r =… JEE Main 2026A body of mass 14 kg initially at rest explodes and breaks into three fragments of masses… JEE Main 2026In a perfectly inelastic collision, two spheres made of the same material with masses 15… JEE Main 2026Given below are two statements : Statement I : For a mechanical system of many particles… JEE Main 2026In a scattering experiment, a particle of mass 2 m collides with another particle of mass… JEE Advanced 2025 Full Center of Mass, Momentum and Collision list All NTA Abhyas JEE Main PYQs