Question

An astronaut weighs 112 N on moon's surface. The acceleration due to gravity on moon is one-sixth of that on earth. What is the mass of the astronaut on earth's surface ? *
72.51 kg
76.71 kg
68.71 kg
64.51 kg​

Answer 1

answer

Mass of the object, m=10 kg

Acceleration due to gravity at earth, g

e

=9.8 ms

−2

∴ Weight of the object on earth, W=mg

e

=10×9.8=98 N

Acceleration due to gravity at moon, g

m

=

6

1

×9.8=1.63 ms

−2

∴ Weight of the object on moon, W=mg

m

=10×1.63=16.3 N