An average force of 125   N is applied on a machine gun firing bullets each of mass 10   g at the…

An average force of 125 N is applied on a machine gun firing bullets each of mass 10 g at the speed of 250 m s-1 to keep it in position. The number of bullets fired per second by the machine gun is :
  1. 50
  2. 25
  3. 100
  4. 5

Solution

The formula to calculate the net momentum of the gun and bullet system can be written as

F=nmv   ...1

Substitute the values of the known parameters into equation (1) and solve to calculate the required number of bullets.

125=n×101000×(250)n=50

Asked in: JEE Main 2023 (11 Apr Shift 1)

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