Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12

# Two Babies Are Born in a Moving Train, One in the Compartment Adjacent to the Engine and Other in the Compartment Adjacent to the Guard. - Physics

Short Note

Two babies are born in a moving train, one in the compartment adjacent to the engine and other in the compartment adjacent to the guard. According to the train frame, the babies are born at the same instant of time. Who is elder according to the ground frame?

#### Solution

Here, the train is in a moving frame and the clocks of the moving frame are out of synchronisation.
If L0 is the rest length separating the clocks and v is the speed of the moving frame, then the clock at the rear end leads the one at the front by L0v/c2.

Thus, the baby adjacent to the guard cell is elder to the baby adjacent to the engine.

Is there an error in this question or solution?

#### APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 25 The Special Theory of Relativity
Q 10 | Page 458