Humanity and life will die, that is for sure, but maybe not because of the g-force alone. As <PERSON> pointed out in the comments of the original post :
The small problem is that the force pulling the Earth towards the Sun will also increase by a factor of ten, with very unhappy consequences for Earth's orbit...
Temperature
While a day might not be enough to make Earth plunge into the sun with such force, the orbit will be off-course by a lot. 393
I have no idea how to do the calculation, but I'm convinced usual users might know how to prove it.
Anyway, the Earth orbit is in a very small spot where the temperature is balanced, having a span of temperature of -30ish°C in the coldest places in winter to 40ish°C in hot places on summer. This relatively small span of temperature allows fauna & flora to adapt to winter and be reborn / wake-up in spring.
Having a larger orbit because of the 24h gravitational shift will increase this temperature span, and thus killing every life being that can't adapt enough.
EDIT : As pointed out by ThisIsMe, this schematic is wrong in its naming. Instead of Summer and Winter (which is influenced by the inclinaison of Earth and NOT by the distance to the Sun), let's call them "Hot phase" and "Cold phase".
There is a 25ish°C temperature gap between the 2 seasons in continental contries as is, imagine the temperature gap now that summer and winter are so far appart from what they were.
The moon
Even if Earth won't pludge into the sun because of the distance between them and the short duration, the moon will plundge into Earth (can't prove it once again, but I'm pretty sure being pulled during a full revolution will drag it down).
And even if I'm mistaken and the moon doesn't crash, it will at least pass very close to Earth, generating some big waves.
Conclusion
If the goal is just to destroy humanity, yes, it's a good way to do it (for the most part, some could escape), but if aliens plan to colonise Earth afterward, that's a big no. 591