An object is kept at rest at a...|Gravitation|JEE-Main 2023

JEE MAIN 2025

04-04-2025 S2

Question

An object is kept at rest at a distance of 3R above the earth's surface where is earth's radius. The minimum speed with which it must be projected so that it does not return to earth is: (Assume mass of earth, Universal gravitational constant)

Select the correct option:

$\sqrt{\frac{\mathrm{GM}}{\mathrm{R}}}$

$\sqrt{\frac{3 G M}{\mathrm{R}}}$

$\sqrt{\frac{\mathrm{GM}}{2 \mathrm{R}}}$

$\sqrt{\frac{2 \mathrm{GM}}{\mathrm{R}}}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

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JEE Main

Physics

Easy

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