Question

a gun of mass m kg is fires a shell of mass 1.5 kg with a velocity of 200 m/s and recoils with a velocity of 1.5 m/s .calculate the mass of the gun.

Answer 1

mass of gun will be 150kg , law of conservation of mementum ke acc.

Answer 2

$ASSALAMUALAIKUM$

$GIVEN VALUES:-$

»mass of shell = m1 = 1.5kg

»mass of gun = m2 = ?

»velocity of shell = V1 = 200

»velocity of gun = V2 = 1.5
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»SOLUTION:- Apply conservation of momentum

= m1V1 + m2V2

both bullet and gun are at rest before firing hence total momentum will be zero.

=m1V1 + m2V2 = 0

= m1V1 = m2V2

= 1.5 X 200 = m2 X 1.5

= m2 = 200kg

$ANSWER:- mass of gun = 200 kg$
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$INSHAALLAH it will help you!$

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