(adsbygoogle = window.adsbygoogle || []).push({}); Is relativistic effect of length contraction physically "real"?

Is Lorentz contraction a real contraction? For example, if one tries to accelerate a solid body, does its contraction require an extra input of energy to squeeze the atoms of the body closer together? Will this extra energy go into the total mass of the moving body?

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# Is relativistic effect of length contraction physically real ?

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