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**Summary::**Require confirmation regarding answers to a question posed by the book "Basic Relativity" by Richard A. Mould.

Here is a problem which I encountered while going through

*Basic Relativity*by Richard A. Mould-

I'd like to receive a confirmation regarding the answers I've come up with to the question, since I'm an absolute beginner in Special Relativity.

a) The length of the train as measured by the

**train observer**would be the length of the platform as measured by the train observer, and equal to L/gamma, as the platform is moving with respect to the train observer.

b) According to a

**ground observer**, the reading on clock 2 at that instant would be 4 - L/v. Since the platform clocks are not synchronized with respect to the train observer, the reading on clock 2 at that instant for the

**train observer**would be 4 - L/(gamma v), due to time dilation.

c) The time interval between the two events according to the

**train observer**would be thus L/(gamma v).

Can someone confirm if the above answers are correct? If not, can someone tell me where am I possibly going wrong? Thanks!