If one of the pair of Magdeburg hemispheres were fastened to a strong tree, the force needed by a single party to pull them apart would be
A)half as much.
B)the same.
C)twice as much.
D)none of the above

Question

Quizplus · Accepted Answer

The force required to pull apart the Magdeburg hemispheres would remain the same, regardless of whether one is fastened to a strong tree or not. The force needed is determined by the air pressure difference between the inside and the outside of the hemispheres, not by how they are anchored.

If One of the Pair of Magdeburg Hemispheres Were Fastened