A 4

.
7 kg mass weighs 39
.
95 N on the surface
of a planet similar to Earth. The radius of
this planet is roughly 6
.
2
×
10
6
m.
Calculate the mass of of this planet. The
value of the universal gravitational constant
is 6
.
67259
×
10
−
11
N
·
m
2
/
kg
2
.
Answer in units of kg.