How are moving pulleys different from fixed-position pulleys?

Dax dxsadccgcnschbcjchbcgbcn bhc

Is there any opitions? if you have the periodic table, the noble gases are 8a family, the halogen are the 7a family, and the nonmetal are  carbon, nitrogen, phosphorus, oxygen, sulfur, selenium, fluorine, chlorine, bromine, iodine and astatine.

The sun's gravitational pull is weaker on the planets that are closer to it, i think.