Answer:
The weight would be greater in the Mariana because the radius of the earth is lower.
Explanation:
We will make a comparison through constants and equations to see which one is more viable.
Using the force of gravity
[tex]F = \frac{Gm}{R^2}[/tex]
F = Gravity force
G= Gravitational constant
m= mass
R is the radius of the earth, [tex]R_E = 6384[/tex] km and [tex]R_M =6370[/tex] km
Density [tex](\rho)[/tex] is equal in both places,
-Gravity Force at Ecuador, [tex]F_E=\frac{Gm}{R_E^2}[/tex]
-Gravity Force at bottom of Mariana trench, [tex]F_M=\frac{Gm}{R_M^2}[/tex]
Making the relation,
[tex]\frac{F_E}{F_M}= \frac{\frac{Gm}{R_E^2}}{\frac{Gm}{R_M^2}}[/tex]
[tex]\frac{F_E}{F_M}= (\frac{R_M}{R_E})^2[/tex]
For the Ecuador,
[tex]F_E= F_M * \frac{R_M^2}{R_E^2}[/tex]
If we take [tex]F_M * R_M^2[/tex] as a constant X then
[tex]F_E= \frac{X}{R_E^2}[/tex]
So the gravity force of the place is inversely proportion of the radius
Same for the Mariana trench,
[tex]FM= \frac{X}{R_M^2}[/tex]
Then, the weight would be greater in the Mariana because the radius of the earth is lower.