Why is the planetary model of the atom inconsistent with the laws of classical physics?

According to Maxwell’s theory, particles moving with acceleration emit electromagnetic waves and, as a result, continuously lose energy. Therefore, the electro rotating around the nucleus, in a time equal to 10 ^ -8 s, as shown by calculations, should fall on the nucleus. However, atoms in an unrestrained state do not emit energy and exist indefinitely.
In addition, the electron, moving around the nucleus in an orbit of ever smaller radius, continuously emits energy, therefore, the radiation spectrum of the atom must be continuous. It is known from experiments that the emission spectrum of an atom consists of individual lines separated by dark stripes, in other words, it is a line spectrum.

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