Question

A bullet of mass 8g is fired with a gun The bullet leaves the barrel with a velocity of 200m/s after 0.004 second.Find the force exerted by the gun on the bulletA bullet of mass 8g is fired with a gun The bullet leaves the barrel with a velocity of 200m/s after 0.004 second.Find the force exerted by the gun on the bullet​

Answer 1

Answer:

ANSWER

Let the bullet accelerate with acceleration =a

Time taken to leave the barrel=t

v−0=at and v

2

−0=2aL

t=

a

v

and a=

2L

v

2

Force acting on the bullet F=ma

Work done on the bullet =F.L=ma.L

Average power delivered to bullet =

t

maL

a

v

maL

=

v

ma

2

L

=

v

m(

4L

2

v

4

)L

=

4L

mv

3