Question

The acceleration due to gravity on Jupiter is 23.1 m/s2, which is about twice the acceleration due to gravity on Neptune.

Which statement accurately compares the weight of an object on these two planets?

An object weighs about one-fourth as much on Jupiter as on Neptune.
An object weighs about one-half as much on Jupiter as on Neptune.
An object weighs about two times as much on Jupiter as on Neptune.
An object weighs about four times as much on Jupiter as on Neptune.

Answer 1

An object weighs about two times as much on Jupiter as on Neptune.

Reason: weight = m·g, so the ratio is 23.1 / (≈11.55) ≈ 2, meaning the object’s weight on Jupiter is about twice its weight on Neptune.