Question:
Escape velocity of a rocket fired from the earth towards the moon is a velocity to get rid of the:
Escape velocity of a rocket fired from the earth towards the moon is a velocity to get rid of the:
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Escape velocity depends on the mass and radius of the planet, not on the mass of the escaping object.
Updated On: Aug 14, 2025
- Centripetal force due to Earth’s revolution
- Earth’s gravitational pull
- Centripetal force due to Earth’s rotation
- Moon’s gravitational pull
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The Correct Option is B
Solution and Explanation
Step 1: Understanding escape velocity
Escape velocity is the minimum speed required for an object to break free from the gravitational influence of a celestial body without further propulsion.
Step 2: Earth’s gravitational effect
For a rocket launched from Earth, the primary force it must overcome is the gravitational pull of the Earth. This is because the Earth’s gravity strongly holds any object near its surface.
Step 3: Value of escape velocity
For Earth, the escape velocity is approximately \(\mathbf{11.2 \ km/s}\) at the surface, which ensures that the object will not fall back due to Earth’s gravity.
\[ \boxed{\text{Escape velocity is to overcome Earth's gravitational pull.}} \]
Escape velocity is the minimum speed required for an object to break free from the gravitational influence of a celestial body without further propulsion.
Step 2: Earth’s gravitational effect
For a rocket launched from Earth, the primary force it must overcome is the gravitational pull of the Earth. This is because the Earth’s gravity strongly holds any object near its surface.
Step 3: Value of escape velocity
For Earth, the escape velocity is approximately \(\mathbf{11.2 \ km/s}\) at the surface, which ensures that the object will not fall back due to Earth’s gravity.
\[ \boxed{\text{Escape velocity is to overcome Earth's gravitational pull.}} \]
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