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A soldier fires bullets, each of mass 50...

A soldier fires bullets, each of mass 50 g, from his automatic rifle with a velocity of 1000 m/s. If he can bear a maximum force of 200 N on his shoulder, find the number of bullets which he can fire in a second.

Text Solution

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The momentum imparted to n bullets per second = (nmv -0 ) = nmv (momentum of a bullet =mv )
`=nmv = (dp)/( dt )`
`=:. , 200 nmv `
`n = (200)/( mv) = (200)/( 50 xx 10^(-3) xx 10^(3))`
`:. , n= 4`
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