Question

Calculate the mass of earth

Answer 1

Answer:

$m=6.85\times 10^{24}\ kg$

Explanation:

The radius of Earth is $6.67\times 10^6\ m$

The density of an object is given by :

$d=\dfrac{m}{V}$

The density of Erth is, d = 5515 kg/m³

Where

m is the mass of the Earth

So,

$m=d\times V\\\\m=\dfrac{4}{3}\pi r^3\times d$

Put all the values,

$m=\dfrac{4}{3}\pi \times (6.67\times 10^6)^3\times 5515 \\\\m=6.85\times 10^{24}\ kg$

So, the mass of the Earth is equal to $6.85\times 10^{24}\ kg$.