To determine which planet an object would weigh the most on, we can use the estimated mass of each planet. The weight of an object is directly proportional to the mass of the planet it is on, assuming all planets have similar radii.
Here are the masses of the planets for reference:
- Planet W: 6.4 x 10^23 kg
- Planet X: 3.3 x 10^23 kg
- Planet Y: 59.7 x 10^23 kg
- Planet Z: 48.7 x 10^23 kg
Since Planet Y has the highest mass, an object would weigh the most on Planet Y.
So the correct answer is:
on planet Y