Home
Class 11
PHYSICS
A machine gun fires a bullet of mass 40 ...

A machine gun fires a bullet of mass 40 gm with a speed `1200 m//s` The man holding it can exert a maximum force of 144 N on the gun. How many bullets can he fire per second at the most?

A

One

B

Four

C

Two

D

Three

Text Solution

Verified by Experts

The correct Answer is:
D
`F=(dp)/(dt)=d/(dt)(nmv)=mv(dn)/(dt)`
`:. (dn)/(dt)=F/(mv)=144/(40xx10^(-3)xx1200)=3`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • FORCE AND NEWTONS LAWS OF MOTION

    GRB PUBLICATION|Exercise More than one choice is correct|15 Videos

  • FORCE AND NEWTONS LAWS OF MOTION

    GRB PUBLICATION|Exercise Assertion- Reason|4 Videos

  • FORCE AND NEWTONS LAWS OF MOTION

    GRB PUBLICATION|Exercise Problem for practice|30 Videos

  • BASIC MATHEMATICS

    GRB PUBLICATION|Exercise Problems For Practice|35 Videos

  • FRICTION AND CIRCULAR MOTION

    GRB PUBLICATION|Exercise Comprehension type|11 Videos

Similar Questions

Explore conceptually related problems

A machine gun fires a bullet of mass 65 g with a velocity of 1300 m/s. The man holding it can exert a maximum force of 169 N on the gun. The number of bullets he can fire per second will be

A machine gun can fire bullets of 50 grams at a Speed of 2000 m s^(-1) , the man holding the gun can exert an average force of 200 N against the gun. Calculate the maximum number of bullets which he can fire per minute.

Knowledge Check

  • A machine gun fires a bullet of mass 40 g with a velocity 1200 ms^-1 . The man holding it can exert a maximum force of 144 N on the gun. How many bullets can be fire per second at the most?

    A
    Two
    B
    Four
    C
    One
    D
    Three

  • A machine gun fires a bullet of mass 65 g with a velocity of 1300 m/s. The main holding it can exert a maximum force of 169 N on the gun. The number of bullets he can fire per second will be

    A
    1
    B
    2
    C
    3
    D
    4

  • A machine gun fires a bullet of mass 50 gram with a velocity of 800 m/s. The man holding the machine gune can exert a maximum force o 200N. What is the maximum number of bullets he can fire per second?

    A
    2
    B
    3
    C
    5
    D
    Any number of bullets

    • Similar Questions

    Explore conceptually related problems

    A machine gun fire bullets of mass 40 gm each with the velocity of 1000 m/sec. If avberage force is exerted on the gun F is 400 N , then find the no. of bullets fired per minute.

    A machine gun fires 50-g bullets at a speed of 1000 m/s . The gunner , holding the machine in his hands , can exert an average force of 150 N against the gun . Calculate the maximum number of bullets he can fire one minute.

    A machine gun fires bullets of 50gm at the speed of 1000m/sec. If an average force of 200N is exerted on the gun, the maximum number of bullets fired per minute is:

    A man fires a bullet of mass 200 g at a speed of 5 m //s . The gun is of one kg mass. by what velocity the gun rebounds backwards

    A man fires a bullet of mas 20g at a speed of 100 m/s. The gun is 2 kg mass. By what velocity the gun rebounds backward?

    Home
    Profile