The force on mass ' m ' due to gravity is ' F_1 ' at a height h=R_e/3 from the Earth's surface. At what depth ' d ' inside Earth the body will…

The force on mass ' $\displaystyle m$ ' due to gravity is ' $\displaystyle \vec{F}_1$ ' at a height $\displaystyle h=\frac{R_e}{3}$ from the Earth's surface. At what depth ' d ' inside Earth the body will experience a force ' $\displaystyle \overline{\mathrm{F}}_2$ ' such that $\displaystyle \left|\overrightarrow{\mathrm{F}}_1\right|=\left|\overrightarrow{\mathrm{F}}_2\right|=\overrightarrow{\mathrm{F}}$