The acceleration due to gravity is less at the top of mt. everest because its so far from the center of the earth .
Run electrity through or is postive to the circuit
The primary force would be Thermal Convection, it pushes it and thus makes continents drift.
-Hope that helps, Nexxmexx :3
That is because there are other forces like the friction forces that apply differently on both of them. The frictional forces applied to the sled are smaller than they are on the father, for example, so it's possible for him to pull it.
