How many bullets can he fire per second at the most?, Physics

Assignment Help:

A machine gun fires a bullet of mass 40 g with a velocity 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?
 
Solution)  According to newtons 2nd law..... F=m(v-u)/t

144=0.04*n*1200/1           (per second...so t=1s)

n=3 bullets / sec


Related Discussions:- How many bullets can he fire per second at the most?

Calculation of magnetization and magnetic flux density, A silicon material ...

A silicon material is subjected to a magnetic field of strength 1000A/m. If the magnetic susceptibility of silicon is -0.3x10-5, calculate its magnetization and magnetic flux densi

What is the moment of inertia about the basketball, A basketball player spi...

A basketball player spins a basketball with a radius of 15 cm on his finger. The mass of the ball is 0.75 kg. What is the moment of inertia about the basketball?

What is solenoid? , A solenoid is a coil wound into a tightly packed helix...

A solenoid is a coil wound into a tightly packed helix. In physics, the term solenoid shows  a long, thin loop of wire, often wrapped over a metallic core, which makes a magnetic f

Determine the phase angle of the impedance, A transformer has 600 primary t...

A transformer has 600 primary turns and 150 secondary turns. The primary and secondary resistances are 0.25 and 0.01 respectively and the corresponding leakage reactances are 1.0 a

Ac input resistance in common emitter configuration, AC Input Resistance in...

AC Input Resistance in Common Emitter Configuration Ratio of change in base emitter  voltage  ( ? V BE )  to  the  resulting  change  in  base  current  ( ? I B )  at  cons

Twin paradox, Twin paradox: One of the most popular "paradoxes" in his...

Twin paradox: One of the most popular "paradoxes" in history, predicted trhough A. Einstein's special theory of relativity. Take two twins, born on the similar date on Earth.

Heat therapy, Normal 0 false false false EN-US X-NONE...

Normal 0 false false false EN-US X-NONE X-NONE

State lenzs law, Q State Lenz's law. Lenz's law declares that the indu...

Q State Lenz's law. Lenz's law declares that the induced current produced in a circuit always flows in such a direction that it opposes the change or cause that produces it.

Motion , 4 dimenestional motion examples

4 dimenestional motion examples

Magnetic Effects of Electric Current., A spring is held vertically downward...

A spring is held vertically downward and a current is passed through it . Then the length of the spring : A . increases B. decreases C . does not change D the spring osc

3/12/2013 2:47:18 AM

He force exerted by machine gun on man''''s hand in firing a bullet = change in momentum per second on a bullet or rate of change of momentum =(40/1000*)1200= 48 N .
The force exerted by man on machine gun = 144 N
Therefore, number of bullets fired =  3

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd