Physics
For successful launch of a rocket such as Chandrayaan from earth's surface to space, it has to overcome :
- electrostatic force of earth.
- gravitational force of earth.
- frictional force of earth's atmosphere
- both (2) and (3)
Force
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Answer
both (2) and (3)
Reason — For a rocket like Chandrayaan to be successfully launched from Earth's surface into space, it must overcome:
(a) Gravitational force of Earth – This is the primary force pulling the rocket downward, and a significant amount of thrust is needed to overcome it.
(b) Frictional force of Earth's atmosphere – As the rocket ascends, it encounters air resistance (friction), especially in the lower layers of the atmosphere.
So, the rocket must overcome both gravity and atmospheric friction during launch.
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