Does gravity change?

nesil

If gravity or gravitational energy isolated at a single point, Would that change everything as we know it? Could there be a rate of change of acceleration? How many infinite door does that open?

gr8pics

This is interesting, and how i found this thread.

At home, my bathroom door acts differently, i mean, you know when you just push the door until its almost closed, you know, without pushing until the knob locks or you have to push down the handle to open it again.
One it will stay there without any signs of wanting to open again, but the next day, the door opens wide open and pretty fast no matter how firmly i push it in.
I may have explained this poorly, but does anybody know what i mean, and can explain that?
Its like the angle of the ground/house is changing from day to day

Drakkith

There are a dozen possibilities but none of them have anything to do with gravity changing. Expansion due to temperature changes, humidity, and other things are probably the culprit.

mfb

Add air flow to that list. The bathroom window should be the most important variable, but other open doors/windows and wind outside can have an influence as well.

Concerning gravity:
The gravitational acceleration on earth is about 980 cm/s^2, with deviations in decreasing order:
~5 cm/s^2 difference equator/poles
~0.3 cm/s^2 reduction per km above sea level
~0.3 cm/s^2 variation due to anomalies in the earth
Those are all constant within a human lifetime, they just depend on the position
0.0001 cm/s^2 difference from the gravity of moon and sun