A suitcase of mass is taken to a height of above Earth’s surface

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

A suitcase of mass

50\,\text{kg}

is taken to a height of

1000\,\text{km}

above Earth’s surface. Take Earth’s radius

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

and

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

at the surface. Calculate the suitcase’s weight at this altitude. (a)

4.2\times10^{2}\,\text{N}

(b)

3.7\times10^{2}\,\text{N}

(c)

6.5\times10^{2}\,\text{N}

(d)

4.9\times10^{2}\,\text{N}