I was thinking about this for a while now but I coudn't explain it, si here is it :, We have and athlète holding a horizental 20m pole, he's moving at with a (relative) velocity v such that γ = 2, he kept until reaching a 10m large house and closed the door, the house is at rest, now for the "rest" frame of reference we know that this can happen due to lorentz contraction, so in the athlète frame this happens two, but in his frame the house is only 5m large and the pole is 20m, can someone help and tell me if i missed something ?(adsbygoogle = window.adsbygoogle || []).push({});

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# Pole in the house

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