Q107
In the absence of gravitational force of attraction, propulsion on the rocket is:
A.
stable at the rate of exhaust gas is constant
B.
stable for short range rockets
C.
not stable
D.
stable
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
In the absence of gravitational force of attraction, propulsion on the rocket is stable.
This is because: according to Newton's third law of motion, every action has an equal and opposite reaction.
As the rocket expels exhaust gases: in one direction, an equal and opposite force propels the rocket in the opposite direction.
Therefore, the propulsion of a rocket is stable even in the absence of gravitational attraction.