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Because of conditioning. I expect that you would soon notice it if the gravitational constant fell to zero and you were flung off into space! You do not notice atmospheric pressure for a similar reason.

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8y ago
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6y ago

I assume you mean, the gravitation between two everyday objects is usually unnoticeable. That's not the same as the "value of the gravitational CONSTANT" being unnoticeable.Just do the calculation for some everyday objects. Assume any reasonable value for mass and distance. For instance, you might calculate the attraction between two trucks, each of them 20 tonnes (20,000 kg), at a distance of 10 meters.

The gravitational attraction, in this case, is a really small number. For comparison: Please note that the formula gives you a force in newton. The weight (which is a force) of an object with a mass of 1 gram (e.g., 1 cc of water) is about 0.01 newton.

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Q: Why the value of universal gravitational constant is usually unnoticeable?
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