The value of acceleration due | Gravitation

JEE MAIN_2019_

S2_100419

Question

The value of acceleration due to gravity at Earth's surface is $9.8 \mathrm{~ms}^{-2}$. The altitude above its surface at which the acceleration due to gravity decreases to $4.9 \mathrm{~ms}^{-2}$, is close to: (Radius of earth $=6.4 \times 10^6 \mathrm{~m}$ )

Select the correct option:

$9.0 \times 10^6 \mathrm{~m}$

$6.4 \times 10^6 \mathrm{~m}$

$1.6 \times 10^6 \mathrm{~m}$

$2.6 \times 10^6 \mathrm{~m}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution