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A bullet of mass 5 g is fired from a gun...

A bullet of mass 5 g is fired from a gun at a speed of 100 m/s. If the barrel of the gun is of length 1 m, then what will be the force caused by the gas, on the bullet?

A

20 N

B

25 N

C

30 N

D

35 N

Text Solution

Verified by Experts

The correct Answer is:
B
KE of a bullet = `1/2 mv^2`
As, change is KE= Work done
`1/2 mv^2 = f_s`
`implies F = (mv^2)/(2s) = (5 xx 10^(-3) xx 100 xx 100)/(2 xx 1) = 25 N`
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