Four identical bathroom scales each support a 60kg person in the following situations:
I. At rest on Earth’s surface (g=9.8m/s2)
II. Inside a descending elevator accelerating downward at 3.0m/s2
III. Inside a rocket in deep space accelerating forward at 12.0m/s2
IV. On the surface of an asteroid where g=2.5m/s2
Rank the magnitudes of the scale readings from greatest to least.
a) II > III > I > IV
b) I > II > IV > III
c) III > I > II > IV
d) III > I > IV > II