A machine gun fires 360 bullets per min and each bullet travels with a velocity of 60m/s of the mass of each bullet is 5gm find the power of the machine gun?
Answers
Answer: Given,
Number of bullets, n=360nos.
Mass of bullet, m
Power, =5400watt
Kinetic energy of 360 bullets, K.E=n×
2
1
mv
2
=360×
2
1
×m×600
2
=648×10
5
mJ
Power=
time
kineticenergy
5400=
60
648×10
5
m
m=5×10
−3
kg=5gram
Hence, weight of each bullet is 5gram
Answer:
A machine gun fires 360 bullets per min and each bullet travels with a velocity of 60m/s of the mass of each bullet is 5gm. The power of the machine gun will be .
Explanation:
Power can be simply defined as the rate of work done or the amount of energy converted per unit time.
Power (P) =
...(1)
Work done by the bullet will be equal to the change in kinetic energy which can be expressed as,
where m - mass of the bullet
v - velocity
Let n be the number of bullets,
then power becomes,
Or
...(2)
From the question,
Substitute the above values into equation(2)
Equation (2) becomes,
The power of the gun