An asteroid experiences an attractive force of from Earth when its centre is from…

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

Problem

An asteroid experiences an attractive force of

1.0\times10^{3}\,\text{N}

from Earth when its centre is

4.0\times10^{7}\,\text{m}

from Earth’s centre. If Earth’s mass is

6.0\times10^{24}\,\text{kg}

and

G = 6.67\times10^{-11}\,\text{N m}^2\text{kg}^{-2}

, the mass of the asteroid is closest to (a)

4.0\times10^{2}\,\text{kg}

(b)

4.0\times10^{6}\,\text{kg}

(c)

4.0\times10^{3}\,\text{kg}

(d)

1.0\times10^{3}\,\text{kg}