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If one were standing on a body that is part of a binary system such as Pluto/Charon, would the g-forces of the motion of the planet be perceptible by a human?

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What do you mean by perceptible? Astronomically observable? Measurable on a lab experiment? Perceptible g-forces on humans? –  Emilio Pisanty Feb 5 '13 at 18:58
    
I have updated the question. –  trpt4him Feb 5 '13 at 21:50
    
Then zhermes' answer applies. Humans feel g-forces of order 1 g (unless they change suddenly). Assuming the planet has Earth-like surface gravity, that puts the planet pretty near the Roche limit. –  Emilio Pisanty Feb 6 '13 at 10:10

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Assuming you mean, 'could a person feel it?' - then no. To be able to feel the effect of the motion, the system would have to be near break-up (with the surface near the Roche/Tidal limit), which never really happens for binary-planets.

For a planet very near a star, it could be perceptible... but in most cases you'd be burned up (etc) due to the close proximity to the star.

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