According to the station clocks, two babies are born at the same instant, one in Howrah and other in Delhi. (a) Who is elder in the frame of 2301 UP Rajdhani Express going from Howrah to Delhi? (b) Who is elder in the frame of 2302 Dn Rajdhani Express going from Delhi to Howrah.

Question

Philoid · Accepted Answer

Both the stations are in ground frame; hence the station clocks will record the proper time interval. But the clocks in train will record improper time because they are at different places travelling with different speed. The proper time interval is less than improper i.e. . Hence, in case (a) In the train going from Howrah to Delhi, the baby born in Delhi will be elder. (b) In the train going from Delhi to Howrah, Howrah baby will be elder.

According to the station clocks, two babies are born at the same instant, one in Howrah and other in Delhi.(a) Who is elder in the frame of 2301 UP Rajdhani Express going from Howrah to Delhi?(b) Who is elder in the frame of 2302 Dn Rajdhani Express going from Delhi to Howrah.

According to the station clocks, two babies are born at the same instant, one in Howrah and other in Delhi.
(a) Who is elder in the frame of 2301 UP Rajdhani Express going from Howrah to Delhi?

(b) Who is elder in the frame of 2302 Dn Rajdhani Express going from Delhi to Howrah.