The book "Black Hole Wars" used the following to explain the concept of a difference in time near black holes. Step 1: Find a massive black hole, large enough so that tidal forces will be harmless to a human near the Schwarzschild radius. Step 2: Lower a person down via a cable. Result: The person lowered will experience significantly lower time than the people at the other end of a rope. I have a couple questions with this thought. Could someone explain a general idea about the numbers involved in such a situation? The person lowered will be experiencing an enormous gravity, right? Enough to crush a person? Enough to flatten steel? Wouldn't the pull on the cord and lowered object be absurdly large? If the cable was attached to a distant planet, wouldn't the entire planet be pulled in at a rapid pace. Could someone check my understanding? I am going to type a small paragraph from my understanding of acceleration/gravity. I assume most of it is a bit off: "There is no difference in time variance resulting from an accelerating object or an object inside a gravitational field. If a trampoline is being used as an analogy, then space-time is curved around an object placed on the surface. Acceleration may be viewed as the trampoline being shifted up and down. Eg, an object placed on the surface causes a constant indentation. The object is then given acceleration, resulting in the trampoline being shifted. The trampoline's surface in now perfectly flat, or can be, with the correct acceleration." A shifting trampoline may be a bad analogy, but I'm trying to find a way to visualize how acceleration causes a variance in space-time without creating a gravitational field. Gravity is a field, but acceleration is one object's property? Further, if my statement "There is no difference in time variance resulting from an accelerating object or an object inside a gravitational field" is true, then how else can this be worded? Can this same message be written without the word 'time?' I ask, because a new wording may help me understand the principle better, or help me see physical equivalencies between space, time, and whatever else is present in this situation. Thank you very much for your time. Any comments on the subject will be appreciated.