Physics

Problem

A stone of mass

5\,\text{kg}

is taken to the Moon. Given that

\dfrac{M_{\text{Moon}}}{M_{\text{Earth}}}=\dfrac1{81}

and

\dfrac{R_{\text{Moon}}}{R_{\text{Earth}}}=\dfrac14

, find the approximate weight of the stone on the Moon.\newline\text{(Take }g\,(\text{Earth}) = 9.8\,\text{m s}^{-2}\text{.)} a)

8.2\,\text{N}

49\,\text{N}

9.8\,\text{N}

3.1\,\text{N}