During the journey of space ship from earth to moon and back, the maximum fuel is consumed :-

Options

A. Against the gravitation of earth in retum journey
B. Against the gravitation of earth in onward journey
C. Against the gravitation of moon while reaching the moon
D. None of the above

Answer

To determine when the maximum fuel is consumed during a spaceship's journey from Earth to the Moon and back, we need to analyze the different phases of the journey in relation to gravitational forces.

### Step-by-Step Solution:

1. **Understanding Gravitational Forces**:
- The Earth and the Moon exert gravitational forces that affect the spaceship during its journey. The gravitational pull of Earth is stronger than that of the Moon due to its larger mass.

2. **Analyzing the Journey**:
- The journey can be divided into two main parts:
- From Earth to the Moon (onward journey)
- From the Moon back to Earth (return journey)

3. **Fuel Consumption During the Onward Journey**:
- When the spaceship is launched from Earth towards the Moon, it must overcome Earth's gravitational pull. This requires a significant amount of fuel to gain enough velocity to escape Earth's gravitational field.
- Therefore, maximum fuel is consumed during this phase as the spaceship works against the force of gravity.

4. **Fuel Consumption During the Return Journey**:
- On the return journey, as the spaceship approaches Earth, it is pulled by Earth's gravity. However, it does not need to consume as much fuel because it is being assisted by gravity when descending towards Earth.
- The gravitational pull helps the spaceship to return, reducing the amount of fuel needed.

5. **Fuel Consumption While Landing on the Moon**:
- While landing on the Moon, the spaceship is also assisted by the Moon's gravity. Thus, fuel consumption is not maximized in this phase either.

6. **Conclusion**:
- The maximum fuel consumption occurs when the spaceship is moving against Earth's gravitational pull during the onward journey to the Moon. Therefore, the correct answer is that maximum fuel is consumed against the gravity of Earth in the onward journey.

### Final Answer:
The maximum fuel is consumed **against the gravity of Earth in the onward journey**.

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