Inertial Frame FallingMediumQuestion 30755
Question
Einstein's equivalence principle states:
- AGravitational mass equals inertial mass
- BA freely falling frame is locally equivalent to an inertial frame with no gravityCorrect
- Cg is the same everywhere in the universe
- DEscape velocity equals orbital speed
Correct answer
A freely falling frame is locally equivalent to an inertial frame with no gravity
Explanation
Einstein's equivalence principle: a uniformly accelerating frame is locally indistinguishable from a gravitational field. Conversely, a freely falling frame is locally equivalent to a gravity-free inertial frame (the basis of general relativity).