The graph illustrates how a spring’s extension varies with the masses hanging from it, both when the spring is on planet X and when it is on planet Y. Which conclusion may be drawn from these graphs?
- AIt is not possible to compare the gravitational field strengths on planets X and Y.
- BThe gravitational field strength on planet X is equal to the gravitational field strength on planet Y.
- CThe gravitational field strength on planet X is one third of the gravitational field strength on planet Y.
- DThe gravitational field strength on planet X is three times the gravitational field strength on planet Y.