Three isolated two-body systems are described below

PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Three isolated two-body systems are described below. • Pair P: m1=6.0×1024 kgm_1=6.0\times10^{24}\,\text{kg}, m2=2.0×1024 kgm_2=2.0\times10^{24}\,\text{kg}, separation r=4.0×108 mr=4.0\times10^{8}\,\text{m} • Pair Q: m1=8.0×1024 kgm_1=8.0\times10^{24}\,\text{kg}, m2=1.0×1024 kgm_2=1.0\times10^{24}\,\text{kg}, separation r=5.0×108 mr=5.0\times10^{8}\,\text{m} • Pair R: m1=5.0×1024 kgm_1=5.0\times10^{24}\,\text{kg}, m2=5.0×1024 kgm_2=5.0\times10^{24}\,\text{kg}, separation r=6.0×108 mr=6.0\times10^{8}\,\text{m} Rank the pairs by the magnitude of their mutual gravitational potential energy, from greatest to least. Express your answer in the form R > P > Q, etc.

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