Question

a bullet of 50g is shot with a velocity of 100m/s. it gets embedded in a barrel at rest which eventually starts moving with a velocity of 50 m/s . find the mass of the barrel

Answer 1

Answer:

Mass of bullet⇨50g⇨0.05kg

Velocity ⇨100m/s

•°•Momentum ⇨0.05×100

Momentum ⇨5kgms-²

Now mass of barrel ⇨x

velocity of barrel⇨60m/s

•°•Momentum ⇨60xkgms-²

We know momentum get conserved

so momentum of bullet = momentum of barrel

•°• 5kgms-² = 6x kgms-²

→6x=5

→x = 0.8kg

Therefore mass of barrel is 0.8kg