125. 2022年9月10日 07:30:01 : GzW0oOLJd2 : N1NoNXhxLjJYVU0=[1]
Equivalence Principle
Starting is to accept inertial forces as inertial forces. In a free-fall elevator, inertial force and gravity acting on the entire cabin is equal. As Newton’s third law of motion shows. Magnitudes of inertial force and gravity acting on each mass point (assume fluid) in elevator are as shown by Newton. That’s all.
Eh, the equivalence principle? Will be worthless at all.
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