A machine gun fires a bullet of mass 40g with a velocity 1200ms−1. The man holding it can exert a maximum force of 144N on the gun. How many bullets can the man fire per second at the most?
A
One
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B
Four
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C
Two
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D
Three
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Solution
The correct option is CThree Let n be the maximum no. of bullets fired by man per sec. ∴ Force = rate of change of momentum