Adapting humans to a permanent 1.5g environment
Ten thousand random adults have been magically transported from Earth to an Earth-like planet with a surface gravity of 1.5g. The planet is otherwise completely habitable (enough sun, the right temperature, right mix of amino acids in the flora and fauna, plenty of fresh surface water etc.) There is no coming back to Earth and there is no communication possible with Earth.
How long or how many generations would it take this group of humans to evolve to deal with the extra gravity? Gene editing isn't possible since no tech came with this group. It's just raw survival of the fittest.
The 10K people are all at least 18 years old and in reasonable health. It's a clean 50/50 split between male and female. There are at least 100 doctors and 1000 engineers in the group.
Out of Scope
Political concerns, warring factions, technology troubles, diseases not related to the extra gravity are all out of scope. The troubles with being magically transported to a new planet and starting civilization from scratch have been well covered elsewhere.
I've chosen 1.5g to be strenuous but survivable. Related question about higher $g$ environments.
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