Physics

Problem

A spacecraft carrying an astronaut of mass

60\,\text{kg}

is in a circular path

400\,\text{km}

above Earth’s surface. Taking

R_{\rm E}=6400\,\text{km}

and

g=9.8\,\text{m\,s}^{-2}

on the surface, calculate the astronaut’s weight in the spacecraft. (Give the answer to two significant figures.)