The identical twins Speedo and Goslo join a migration from theEarth to Planet X.

Question

The identical twins Speedo and Goslo join a migration from theEarth to Planet X. It is 24.0 ly awayin a reference frame in which both planets are at rest. The twins,of the same age, depart at the same time on different spacecraft.Speedo's craft travels steadily at 0.980c, and Goslo's travels at0.750c. Calculate the age difference between the twinsafter Goslo's spacecraft lands on Planet X.


hi when speedo arrives at the planet..............he become stationary, this time , goslo become the person who moves really fast. should not we consider the time dilation??

Explanation / Answer

for speedo
T=24ly/0.980=24.48 years
actual time=To/(1-(v2/c2))=123.01 years

for goslo

T=24/0.75=32 years

actual time for goslo=32/(1-0.752 )=48.37 years

age difference=123.01-48.37=74.64 years

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