Answer
a) $W_s=4700N$
b) $F=160N$
Work Step by Step
(a) We know that
$W_s=mg$
We plug in the known values to obtain:
$W_s=480(9.81)$
$W_s=4700N$
(b) We know that
$F=G\frac{mM_E}{r^2}$
We plug in the known values to obtain:
$F=6.67\times 10^{-11}\times\frac{480\times 5.97\times 10^{24}}{35\times 10^6}$
$F=160N$
