Due to internal combustion inside a rocket, gases are ejected at the rate of . The velocity of the gases with respect to the rocket is . Calculate the force exerted on the rocket.
Step 1: Given data
Rate of ejection of gases or rate of change of the mass =
The velocity of gases with respect to the rocket =
Step 2: Formula used
Rate of change of momentum =
Step 3: Calculation
By substituting the values in the above formula, we get
Since force is equivalent to momentum.
Therefore force exerted on the rocket is .