When you step on a weighing scale at noon, Earth pulls you downward and the overhead Sun pulls you upward. The reason the Sun's pull doesn't decrease your weight at noon is because
A) the Sun's pull on you is negligibly small.
B) the weighing scale is calibrated only in Earth weight.
C) you, the scale, and Earth are in free fall (in orbit) around the Sun.
D) the Sun's pull is cancelled by the gravitation of other celestial bodies.
E) of tidal effects in the solid Earth.
Question 2
If you jounce up and down on a bathroom scale, what varies on the scale reading is
A) mg.
B) the normal force.
C) both of these
D) neither of these
