Physics, asked by Adityarocks655, 1 year ago

From a rifle of mass 5kg, a bullet of mass 50gram is fired with an initial velocity of 50m/s. Calculate the initial recoil velocity of the rifle

Answers

Answered by abhi178
375
you know about \text{\underline{conservation of linear momentum}}
when external force act on system = 0 , linear momentum of system remains constant.
I mean, initial momentum = final momentum

here mass of rifle , M = 5Kg
mass of bullet , m = 50gm = 0.05kg
initial velocity of bullet , u = 50 m/s
we have to find initial recoil velocity of rifle , U
final velocity of bullet , v = 0
final velocity of rifle , V = 0

use conservation of linear momentum,
mu+MU=mv+MV

0.05 × 50 + 5 × U = m × 0 + M × 0

0.05 × 50 + 5U = 0

5U = -0.05 × 50

U = -0.5 m/s [here negative sign shows that velocity of rifle is just opposite to the bullet . yes of course it is recoil velocity ]

hence, initial velocity of refile is -0.5 m/s
Answered by shivbhanmishra
13

Answer:

good morning sir please find attached the notes of the notes of the

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