Question

If an astronaut is 66 kg, what is their weight in N on the moon?

Answer 1

Mass isn’t dependent on gravity, so the man would still be 66
66
k
g
. His weight, however, is calculated using the formula:

=
w
=
m
g

So, weight, equal mass times the acceleration due to gravity. On the moon, acceleration due to gravity is 1.62/²
1.62
m
/
s
²
. If we plug these “givens” in, we get:

=(66)(1.62/²)
w
=
(
66
k
g
)
(
1.62
m
/
s
²
)

Therefore, weight equals 106.92
106.92
N
e
w
t
o
n
s
(the unit of weight)

Answer 2

The mass of the person would be 66 kg on both Earth and the Moon.