Property of for same acceleration

1. Jul 4, 2015

andyrk

Does the property that two bodies connected together and if one of them is accelerating with some acceleration the second also accelerates with the same acceleration, have a name? Like for example, if there is a person in an elevator and the elevator is accelerating with acceleration $a$, then the person also accelerates with acceleration $a$. Is there a name for this property? Or is not a property because it is so logical that it is said so because it makes sense?

2. Jul 4, 2015

Dr. Courtney

When to masses are connected with a rope or string, the condition is that the rope or string not stretch.

More generally, there needs to be a fixed distance and orientation between the two objects the for their acceleration to be the same.

3. Jul 4, 2015

andyrk

What about the case for a person inside an accelerating elevator?

4. Jul 4, 2015

Staff: Mentor

It is called rigid motion or, in relativity, Born rigid motion.